Repository: arviz-devs/arviz

Issue:
Add dataframe to InfData examples to cookbook
## Tell us about it
Add dataframe to InfData examples to cookbook

https://arviz-devs.github.io/arviz/getting_started/InferenceDataCookbook.html?highlight=cookbook

```
import pandas as pd
import xarray as xr
import arviz as az
import numpy as np

df = Datasets.Waterbury.to_dataframe()
df["chain"] = 1
df["draw"] = np.arange(len(df), dtype=int)
df = df.set_index(["chain", "draw"])
xdata = xr.Dataset.from_dataframe(df)
idata = az.InferenceData(posterior=xdata)
```



Discussion:
Rishabh261998: Hi, @OriolAbril can you check the PR and provide anything which I need to update and also the problem which I suggested in the description. Thanks

OriolAbril: I would use `az.InferenceData(posterior=xdata)` like it is done in the snippet in the issue instead of `convert_to_inference_data`. As we already have Dataset objects, using InferenceData will be more flexible and would allow for example creating multiple groups at once, which `convert...` does not.

Regarding the attributes, do not worry about it. Attributes are added when converting to `xr.Dataset` which all the other examples in the notebook do under the hood. Here however, the Dataset is created manually, so attributes will not be present unless they are manually added.
Rishabh261998: Thank You for your feedback @OriolAbril, I will change the `convert_to_inference_data` to `InferenceData(posterior=xdata)` and submit a PR. 
OriolAbril: Yes, you can ignore them for now
Rishabh261998: @OriolAbril is there anything more which I need to update? Thanks
OriolAbril: Can you rebase with the latest changes from main and then add a bullet point about the change in the changelog? 

Patch:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c40d2b0..9fae664 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 ### Maintenance and fixes
 * Updated `from_cmdstan`, `from_numpyro` and `from_pymc3` converters to follow schema convention ([1541](https://github.com/arviz-devs/arviz/pull/1541), [1525](https://github.com/arviz-devs/arviz/pull/1525) and [1555](https://github.com/arviz-devs/arviz/pull/1555))
 * Fix calculation of mode as point estimate ([1552](https://github.com/arviz-devs/arviz/pull/1552))
+* Remove variable name from legend in posterior predictive plot ([1559](https://github.com/arviz-devs/arviz/pull/1559))
 
 
 ### Deprecation
@@ -15,6 +16,7 @@
 * Removed credible_interval and include_circ arguments ([1548](https://github.com/arviz-devs/arviz/pull/1548)) 
 
 ### Documentation
+* Added an example for converting dataframe to InferenceData ([1556](https://github.com/arviz-devs/arviz/pull/1556))
 
 ## v0.11.1 (2021 Feb 2)
 ### Maintenance and fixes
diff --git a/arviz/plots/backends/matplotlib/ppcplot.py b/arviz/plots/backends/matplotlib/ppcplot.py
index 0cae2dc..320dc58 100644
--- a/arviz/plots/backends/matplotlib/ppcplot.py
+++ b/arviz/plots/backends/matplotlib/ppcplot.py
@@ -124,14 +124,12 @@ def plot_ppc(
             plot_kwargs = {"color": color, "alpha": alpha, "linewidth": 0.5 * linewidth}
             if dtype == "i":
                 plot_kwargs["drawstyle"] = "steps-pre"
-            ax_i.plot(
-                [], color=color, label="{} predictive {}".format(group.capitalize(), pp_var_name)
-            )
+            ax_i.plot([], color=color, label="{} predictive".format(group.capitalize()))
             if observed:
                 if dtype == "f":
                     plot_kde(
                         obs_vals,
-                        label="Observed {}".format(var_name),
+                        label="Observed",
                         plot_kwargs={"color": "k", "linewidth": linewidth, "zorder": 3},
                         fill_kwargs={"alpha": 0},
                         ax=ax_i,
@@ -144,7 +142,7 @@ def plot_ppc(
                     ax_i.plot(
                         bin_edges,
                         hist,
-                        label="Observed {}".format(var_name),
+                        label="Observed",
                         color="k",
                         linewidth=linewidth,
                         zorder=3,
@@ -179,7 +177,7 @@ def plot_ppc(
                         ax_i.plot(x_s, y_s, **plot_kwargs)
 
             if mean:
-                label = "{} predictive mean {}".format(group.capitalize(), pp_var_name)
+                label = "{} predictive mean".format(group.capitalize())
                 if dtype == "f":
                     rep = len(pp_densities)
                     len_density = len(pp_densities[0])
@@ -224,7 +222,7 @@ def plot_ppc(
                     *_empirical_cdf(obs_vals),
                     color="k",
                     linewidth=linewidth,
-                    label="Observed {}".format(var_name),
+                    label="Observed",
                     drawstyle=drawstyle,
                     zorder=3
                 )
@@ -253,7 +251,7 @@ def plot_ppc(
                     drawstyle=drawstyle,
                     linewidth=linewidth
                 )
-            ax_i.plot([], color=color, label="Posterior predictive {}".format(pp_var_name))
+            ax_i.plot([], color=color, label="Posterior predictive")
             if mean:
                 ax_i.plot(
                     *_empirical_cdf(pp_vals.flatten()),
@@ -261,7 +259,7 @@ def plot_ppc(
                     linestyle="--",
                     linewidth=linewidth * 1.5,
                     drawstyle=drawstyle,
-                    label="Posterior predictive mean {}".format(pp_var_name)
+                    label="Posterior predictive mean"
                 )
             ax_i.set_yticks([0, 0.5, 1])
 
@@ -276,7 +274,7 @@ def plot_ppc(
                             "linewidth": linewidth * 1.5,
                             "zorder": 3,
                         },
-                        label="Posterior predictive mean {}".format(pp_var_name),
+                        label="Posterior predictive mean",
                         ax=ax_i,
                         legend=legend,
                     )
@@ -290,7 +288,7 @@ def plot_ppc(
                         hist,
                         color=color,
                         linewidth=linewidth * 1.5,
-                        label="Posterior predictive mean {}".format(pp_var_name),
+                        label="Posterior predictive mean",
                         zorder=3,
                         linestyle="--",
                         drawstyle="steps-pre",
@@ -316,7 +314,7 @@ def plot_ppc(
                     color="k",
                     markersize=markersize,
                     alpha=alpha,
-                    label="Observed {}".format(var_name),
+                    label="Observed",
                     zorder=4,
                 )
 
@@ -340,9 +338,7 @@ def plot_ppc(
                         vals, yvals, "o", zorder=2, color=color, markersize=markersize, alpha=alpha
                     )
 
-            ax_i.plot(
-                [], color=color, marker="o", label="Posterior predictive {}".format(pp_var_name)
-            )
+            ax_i.plot([], color=color, marker="o", label="Posterior predictive")
 
             ax_i.set_yticks([])
 
diff --git a/doc/source/getting_started/CreatingInferenceData.ipynb b/doc/source/getting_started/CreatingInferenceData.ipynb
index 8974b02..ba86d2c 100644
--- a/doc/source/getting_started/CreatingInferenceData.ipynb
+++ b/doc/source/getting_started/CreatingInferenceData.ipynb
@@ -18,20 +18,7 @@
      "start_time": "2020-06-19T06:23:32.169645Z"
     }
    },
-   "outputs": [
-    {
-     "name": "stderr",
-     "output_type": "stream",
-     "text": [
-      "\n",
-      "Bad key \"text.kerning_factor\" on line 4 in\n",
-      "/Users/michaelnowotny/anaconda3/envs/continuous_time_mcmc/lib/python3.7/site-packages/matplotlib/mpl-data/stylelib/_classic_test_patch.mplstyle.\n",
-      "You probably need to get an updated matplotlibrc file from\n",
-      "https://github.com/matplotlib/matplotlib/blob/v3.1.3/matplotlibrc.template\n",
-      "or from the matplotlib source distribution\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "import arviz as az\n",
     "import numpy as np"
@@ -62,24 +49,22 @@
        "              <div class='xr-header'>\n",
        "                <div class=\"xr-obj-type\">arviz.InferenceData</div>\n",
        "              </div>\n",
-       "              <ul class=\"xr-sections\">\n",
+       "              <ul class=\"xr-sections group-sections\">\n",
        "              \n",
        "            <li class = \"xr-section-item\">\n",
-       "                  <input id=\"idata_posteriorb099a515-38ac-4c20-97b7-97be6969c95d\" class=\"xr-section-summary-in\" type=\"checkbox\">\n",
-       "                  <label for=\"idata_posteriorb099a515-38ac-4c20-97b7-97be6969c95d\" class = \"xr-section-summary\">posterior</label>\n",
+       "                  <input id=\"idata_posteriorb672ff17-1f53-4d91-a561-1ad9b4132b5b\" class=\"xr-section-summary-in\" type=\"checkbox\">\n",
+       "                  <label for=\"idata_posteriorb672ff17-1f53-4d91-a561-1ad9b4132b5b\" class = \"xr-section-summary\">posterior</label>\n",
        "                  <div class=\"xr-section-inline-details\"></div>\n",
        "                  <div class=\"xr-section-details\">\n",
        "                      <ul id=\"xr-dataset-coord-list\" class=\"xr-var-list\">\n",
        "                          <div style=\"padding-left:2rem;\"><div><svg style=\"position: absolute; width: 0; height: 0; overflow: hidden\">\n",
        "<defs>\n",
        "<symbol id=\"icon-database\" viewBox=\"0 0 32 32\">\n",
-       "<title>Show/Hide data repr</title>\n",
        "<path d=\"M16 0c-8.837 0-16 2.239-16 5v4c0 2.761 7.163 5 16 5s16-2.239 16-5v-4c0-2.761-7.163-5-16-5z\"></path>\n",
        "<path d=\"M16 17c-8.837 0-16-2.239-16-5v6c0 2.761 7.163 5 16 5s16-2.239 16-5v-6c0 2.761-7.163 5-16 5z\"></path>\n",
        "<path d=\"M16 26c-8.837 0-16-2.239-16-5v6c0 2.761 7.163 5 16 5s16-2.239 16-5v-6c0 2.761-7.163 5-16 5z\"></path>\n",
        "</symbol>\n",
        "<symbol id=\"icon-file-text2\" viewBox=\"0 0 32 32\">\n",
-       "<title>Show/Hide attributes</title>\n",
        "<path d=\"M28.681 7.159c-0.694-0.947-1.662-2.053-2.724-3.116s-2.169-2.030-3.116-2.724c-1.612-1.182-2.393-1.319-2.841-1.319h-15.5c-1.378 0-2.5 1.121-2.5 2.5v27c0 1.378 1.122 2.5 2.5 2.5h23c1.378 0 2.5-1.122 2.5-2.5v-19.5c0-0.448-0.137-1.23-1.319-2.841zM24.543 5.457c0.959 0.959 1.712 1.825 2.268 2.543h-4.811v-4.811c0.718 0.556 1.584 1.309 2.543 2.268zM28 29.5c0 0.271-0.229 0.5-0.5 0.5h-23c-0.271 0-0.5-0.229-0.5-0.5v-27c0-0.271 0.229-0.5 0.5-0.5 0 0 15.499-0 15.5 0v7c0 0.552 0.448 1 1 1h7v19.5z\"></path>\n",
        "<path d=\"M23 26h-14c-0.552 0-1-0.448-1-1s0.448-1 1-1h14c0.552 0 1 0.448 1 1s-0.448 1-1 1z\"></path>\n",
        "<path d=\"M23 22h-14c-0.552 0-1-0.448-1-1s0.448-1 1-1h14c0.552 0 1 0.448 1 1s-0.448 1-1 1z\"></path>\n",
@@ -102,11 +87,29 @@
        "  --xr-background-color-row-odd: var(--jp-layout-color2, #eeeeee);\n",
        "}\n",
        "\n",
+       "html[theme=dark],\n",
+       "body.vscode-dark {\n",
+       "  --xr-font-color0: rgba(255, 255, 255, 1);\n",
+       "  --xr-font-color2: rgba(255, 255, 255, 0.54);\n",
+       "  --xr-font-color3: rgba(255, 255, 255, 0.38);\n",
+       "  --xr-border-color: #1F1F1F;\n",
+       "  --xr-disabled-color: #515151;\n",
+       "  --xr-background-color: #111111;\n",
+       "  --xr-background-color-row-even: #111111;\n",
+       "  --xr-background-color-row-odd: #313131;\n",
+       "}\n",
+       "\n",
        ".xr-wrap {\n",
+       "  display: block;\n",
        "  min-width: 300px;\n",
        "  max-width: 700px;\n",
        "}\n",
        "\n",
+       ".xr-text-repr-fallback {\n",
+       "  /* fallback to plain text repr when CSS is not injected (untrusted notebook) */\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
        ".xr-header {\n",
        "  padding-top: 6px;\n",
        "  padding-bottom: 6px;\n",
@@ -369,7 +372,8 @@
        "  grid-template-columns: 125px auto;\n",
        "}\n",
        "\n",
-       ".xr-attrs dt, dd {\n",
+       ".xr-attrs dt,\n",
+       ".xr-attrs dd {\n",
        "  padding: 0;\n",
        "  margin: 0;\n",
        "  float: left;\n",
@@ -404,38 +408,47 @@
        "  stroke: currentColor;\n",
        "  fill: currentColor;\n",
        "}\n",
-       "</style><div class='xr-wrap'><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-4e395b5f-9659-400f-b1bf-7aa849dd9636' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-4e395b5f-9659-400f-b1bf-7aa849dd9636' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>chain</span>: 1</li><li><span class='xr-has-index'>draw</span>: 100</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-55e5df8d-4056-41bc-ad17-7924d55da516' class='xr-section-summary-in' type='checkbox'  checked><label for='section-55e5df8d-4056-41bc-ad17-7924d55da516' class='xr-section-summary' >Coordinates: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>chain</span></div><div class='xr-var-dims'>(chain)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0</div><input id='attrs-7d65d1fd-8fae-4117-896b-ad167fecaeb2' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-7d65d1fd-8fae-4117-896b-ad167fecaeb2' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-51d5a477-db97-4922-9bd1-1d4be22286d9' class='xr-var-data-in' type='checkbox'><label for='data-51d5a477-db97-4922-9bd1-1d4be22286d9' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>draw</span></div><div class='xr-var-dims'>(draw)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4 5 6 ... 94 95 96 97 98 99</div><input id='attrs-d643def1-08bd-4c32-aaee-8f6ba7e22af9' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-d643def1-08bd-4c32-aaee-8f6ba7e22af9' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-818824f8-1dc6-4263-a3b5-d60d9f8b8630' class='xr-var-data-in' type='checkbox'><label for='data-818824f8-1dc6-4263-a3b5-d60d9f8b8630' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17,\n",
+       "</style><pre class='xr-text-repr-fallback'>&lt;xarray.Dataset&gt;\n",
+       "Dimensions:  (chain: 1, draw: 100)\n",
+       "Coordinates:\n",
+       "  * chain    (chain) int64 0\n",
+       "  * draw     (draw) int64 0 1 2 3 4 5 6 7 8 9 ... 90 91 92 93 94 95 96 97 98 99\n",
+       "Data variables:\n",
+       "    x        (chain, draw) float64 0.1579 -1.096 -1.142 ... 0.2098 -0.8789\n",
+       "Attributes:\n",
+       "    created_at:     2021-02-13T14:34:09.064078\n",
+       "    arviz_version:  0.11.1</pre><div class='xr-wrap' hidden><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-0d2c74b0-3c0a-43a6-97df-b1f19d73dad7' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-0d2c74b0-3c0a-43a6-97df-b1f19d73dad7' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>chain</span>: 1</li><li><span class='xr-has-index'>draw</span>: 100</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-0ab98ee8-dde9-406e-ac1b-c173b9ec1c44' class='xr-section-summary-in' type='checkbox'  checked><label for='section-0ab98ee8-dde9-406e-ac1b-c173b9ec1c44' class='xr-section-summary' >Coordinates: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>chain</span></div><div class='xr-var-dims'>(chain)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0</div><input id='attrs-074c3354-0cae-4bdb-afa7-0f4529f70978' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-074c3354-0cae-4bdb-afa7-0f4529f70978' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-d1de9830-5dd5-4547-bf99-8092002d8e4b' class='xr-var-data-in' type='checkbox'><label for='data-d1de9830-5dd5-4547-bf99-8092002d8e4b' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>draw</span></div><div class='xr-var-dims'>(draw)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4 5 6 ... 94 95 96 97 98 99</div><input id='attrs-456c9c9a-26fc-43f0-b0a0-f237233e0ebd' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-456c9c9a-26fc-43f0-b0a0-f237233e0ebd' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-3ae1745a-be2f-4b90-b343-0fab9add5ad9' class='xr-var-data-in' type='checkbox'><label for='data-3ae1745a-be2f-4b90-b343-0fab9add5ad9' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17,\n",
        "       18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,\n",
        "       36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,\n",
        "       54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71,\n",
        "       72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,\n",
-       "       90, 91, 92, 93, 94, 95, 96, 97, 98, 99])</pre></li></ul></div></li><li class='xr-section-item'><input id='section-37f5a176-2333-4cf4-b325-278491e18a93' class='xr-section-summary-in' type='checkbox'  checked><label for='section-37f5a176-2333-4cf4-b325-278491e18a93' class='xr-section-summary' >Data variables: <span>(1)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>x</span></div><div class='xr-var-dims'>(chain, draw)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>0.03666 -0.5439 ... 0.06209 0.6484</div><input id='attrs-ca1f4bb1-c9de-4739-b9c9-44b6cbcadcfa' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-ca1f4bb1-c9de-4739-b9c9-44b6cbcadcfa' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-8b80e1b2-c9a0-4616-8bb9-11ae948f4f7f' class='xr-var-data-in' type='checkbox'><label for='data-8b80e1b2-c9a0-4616-8bb9-11ae948f4f7f' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([[ 0.03665646, -0.54393088,  0.25816287, -0.88667309, -0.9348225 ,\n",
-       "         0.33301484, -0.84429579, -1.4424599 , -0.10404786, -1.29350824,\n",
-       "        -0.39855624,  0.73392032, -1.04056388,  0.90595297, -0.33542889,\n",
-       "         0.71002635, -0.93332042,  0.90383559,  0.55048459,  0.84419701,\n",
-       "         0.31012583, -0.84100256, -0.39144559, -1.13356245,  0.85805521,\n",
-       "        -1.23666159, -0.83417515,  2.00148204,  0.18593225, -0.57290472,\n",
-       "        -0.84720181, -1.03068615,  0.26563499, -0.07248018,  0.49226217,\n",
-       "        -0.83664213, -0.06930488, -0.42508101, -0.50932109, -2.03953584,\n",
-       "        -0.50155511,  0.84223862,  0.98786079,  1.95306512, -0.00238945,\n",
-       "         0.84154059,  1.09332188,  0.09321012, -1.32853295,  0.86016117,\n",
-       "         0.03143054, -0.73582048,  0.60286073, -0.27524679,  0.06912192,\n",
-       "        -0.02616594,  0.13402047, -0.28841993, -0.28717231,  0.49984188,\n",
-       "        -1.42709621, -1.08839178,  1.42256533, -2.04966982,  0.1603367 ,\n",
-       "         0.74942004, -0.79721512, -0.39401085, -0.63873233, -1.35973308,\n",
-       "        -1.43679545,  0.25916161, -0.19478977,  0.13274431, -0.69982524,\n",
-       "         0.98709261, -0.21108074, -0.58446043,  1.04648878,  0.29844901,\n",
-       "        -0.799379  , -0.97175979, -1.89425023,  0.4809745 ,  0.61937049,\n",
-       "         1.31717397,  0.78575551,  0.76162552, -0.49251748, -1.21425305,\n",
-       "        -2.14832528,  0.06044719, -1.34104858, -0.08645523,  0.56492468,\n",
-       "         1.9975031 , -1.13772208,  0.23265261,  0.06208744,  0.6484334 ]])</pre></li></ul></div></li><li class='xr-section-item'><input id='section-eedba4df-e9ff-4f19-a3fa-0183e32b9f4d' class='xr-section-summary-in' type='checkbox'  checked><label for='section-eedba4df-e9ff-4f19-a3fa-0183e32b9f4d' class='xr-section-summary' >Attributes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>created_at :</span></dt><dd>2020-06-10T18:19:03.719498</dd><dt><span>arviz_version :</span></dt><dd>0.8.3</dd></dl></div></li></ul></div></div><br></div>\n",
+       "       90, 91, 92, 93, 94, 95, 96, 97, 98, 99])</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-6028dc9c-d316-474a-922e-f350d51725cf' class='xr-section-summary-in' type='checkbox'  checked><label for='section-6028dc9c-d316-474a-922e-f350d51725cf' class='xr-section-summary' >Data variables: <span>(1)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>x</span></div><div class='xr-var-dims'>(chain, draw)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>0.1579 -1.096 ... 0.2098 -0.8789</div><input id='attrs-c37863b9-730c-40f4-af14-97be145b2306' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-c37863b9-730c-40f4-af14-97be145b2306' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-44836608-224a-4f36-83ba-637445c877fe' class='xr-var-data-in' type='checkbox'><label for='data-44836608-224a-4f36-83ba-637445c877fe' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([[ 0.15786879, -1.09617856, -1.14186804,  0.36890996, -0.00480893,\n",
+       "        -0.26640545, -0.22589345,  0.36226862, -0.1637468 ,  0.9463602 ,\n",
+       "        -0.16037895, -0.47217036, -0.32559551,  0.02146089, -1.1951687 ,\n",
+       "        -0.55566732, -1.58659649,  1.22081265, -1.08665849, -0.7958125 ,\n",
+       "         0.65958937,  0.27969403, -0.17490678, -1.24356584, -0.1324672 ,\n",
+       "         0.36716036, -0.36945927,  0.52743292,  1.55669984, -1.55496202,\n",
+       "        -0.23208698,  0.3184957 ,  1.89373564,  1.50685094,  0.06062807,\n",
+       "         0.03812133, -1.50142131, -0.51704982,  0.00602984, -0.0113514 ,\n",
+       "        -0.88565062,  2.62424394, -0.61801463, -2.50243202, -2.15975804,\n",
+       "         1.67773991,  0.2355224 , -0.46748378,  0.93796441,  1.22928386,\n",
+       "        -0.10454738, -1.16191922,  2.0844819 ,  1.14643675, -1.2708001 ,\n",
+       "        -1.20772303,  1.30867462, -1.41595009,  0.39046395, -1.75340487,\n",
+       "        -0.63020928,  0.54330999,  0.82563864, -0.29676448,  0.39695874,\n",
+       "        -0.43591367,  0.33793442, -0.28370068,  0.87123748,  0.78362023,\n",
+       "         0.80684138, -0.28939298,  0.15943827,  0.02084011, -1.17347054,\n",
+       "         2.08937644, -0.05675786,  0.02685161,  0.18905682,  0.86255176,\n",
+       "         0.43466604, -0.50953183, -4.12647035, -1.28030692, -0.92458282,\n",
+       "         0.31344078, -0.76004658, -0.93271076,  0.3004889 ,  1.37911025,\n",
+       "        -0.20649192,  0.49806992,  1.21242756,  1.2386684 ,  0.9563797 ,\n",
+       "         0.74242753,  1.97889055, -1.38845611,  0.20983583, -0.87888212]])</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-24a9a1ba-b78c-422c-b0ad-2ac6726a4845' class='xr-section-summary-in' type='checkbox'  checked><label for='section-24a9a1ba-b78c-422c-b0ad-2ac6726a4845' class='xr-section-summary' >Attributes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>created_at :</span></dt><dd>2021-02-13T14:34:09.064078</dd><dt><span>arviz_version :</span></dt><dd>0.11.1</dd></dl></div></li></ul></div></div><br></div>\n",
        "                      </ul>\n",
        "                  </div>\n",
        "            </li>\n",
        "            \n",
        "              </ul>\n",
        "            </div>\n",
-       "            <style> /* CSS stylesheet for displaying xarray objects in jupyterlab.\n",
+       "            <style> /* CSS stylesheet for displaying InferenceData objects in jupyterlab.\n",
        " *\n",
        " */\n",
        "\n",
@@ -450,11 +463,29 @@
        "  --xr-background-color-row-odd: var(--jp-layout-color2, #eeeeee);\n",
        "}\n",
        "\n",
+       "html[theme=dark],\n",
+       "body.vscode-dark {\n",
+       "  --xr-font-color0: rgba(255, 255, 255, 1);\n",
+       "  --xr-font-color2: rgba(255, 255, 255, 0.54);\n",
+       "  --xr-font-color3: rgba(255, 255, 255, 0.38);\n",
+       "  --xr-border-color: #1F1F1F;\n",
+       "  --xr-disabled-color: #515151;\n",
+       "  --xr-background-color: #111111;\n",
+       "  --xr-background-color-row-even: #111111;\n",
+       "  --xr-background-color-row-odd: #313131;\n",
+       "}\n",
+       "\n",
        ".xr-wrap {\n",
+       "  display: block;\n",
        "  min-width: 300px;\n",
        "  max-width: 700px;\n",
        "}\n",
        "\n",
+       ".xr-text-repr-fallback {\n",
+       "  /* fallback to plain text repr when CSS is not injected (untrusted notebook) */\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
        ".xr-header {\n",
        "  padding-top: 6px;\n",
        "  padding-bottom: 6px;\n",
@@ -485,6 +516,10 @@
        "  grid-template-columns: 150px auto auto 1fr 20px 20px;\n",
        "}\n",
        "\n",
+       ".xr-sections.group-sections {\n",
+       "  grid-template-columns: auto;\n",
+       "}\n",
+       "\n",
        ".xr-section-item {\n",
        "  display: contents;\n",
        "}\n",
@@ -795,24 +830,22 @@
        "              <div class='xr-header'>\n",
        "                <div class=\"xr-obj-type\">arviz.InferenceData</div>\n",
        "              </div>\n",
-       "              <ul class=\"xr-sections\">\n",
+       "              <ul class=\"xr-sections group-sections\">\n",
        "              \n",
        "            <li class = \"xr-section-item\">\n",
-       "                  <input id=\"idata_posteriorce7a9709-acf7-45d8-b2b0-b498d53d8b83\" class=\"xr-section-summary-in\" type=\"checkbox\">\n",
-       "                  <label for=\"idata_posteriorce7a9709-acf7-45d8-b2b0-b498d53d8b83\" class = \"xr-section-summary\">posterior</label>\n",
+       "                  <input id=\"idata_posterior52e3a65f-29c9-4b49-8347-5af08b94ecb6\" class=\"xr-section-summary-in\" type=\"checkbox\">\n",
+       "                  <label for=\"idata_posterior52e3a65f-29c9-4b49-8347-5af08b94ecb6\" class = \"xr-section-summary\">posterior</label>\n",
        "                  <div class=\"xr-section-inline-details\"></div>\n",
        "                  <div class=\"xr-section-details\">\n",
        "                      <ul id=\"xr-dataset-coord-list\" class=\"xr-var-list\">\n",
        "                          <div style=\"padding-left:2rem;\"><div><svg style=\"position: absolute; width: 0; height: 0; overflow: hidden\">\n",
        "<defs>\n",
        "<symbol id=\"icon-database\" viewBox=\"0 0 32 32\">\n",
-       "<title>Show/Hide data repr</title>\n",
        "<path d=\"M16 0c-8.837 0-16 2.239-16 5v4c0 2.761 7.163 5 16 5s16-2.239 16-5v-4c0-2.761-7.163-5-16-5z\"></path>\n",
        "<path d=\"M16 17c-8.837 0-16-2.239-16-5v6c0 2.761 7.163 5 16 5s16-2.239 16-5v-6c0 2.761-7.163 5-16 5z\"></path>\n",
        "<path d=\"M16 26c-8.837 0-16-2.239-16-5v6c0 2.761 7.163 5 16 5s16-2.239 16-5v-6c0 2.761-7.163 5-16 5z\"></path>\n",
        "</symbol>\n",
        "<symbol id=\"icon-file-text2\" viewBox=\"0 0 32 32\">\n",
-       "<title>Show/Hide attributes</title>\n",
        "<path d=\"M28.681 7.159c-0.694-0.947-1.662-2.053-2.724-3.116s-2.169-2.030-3.116-2.724c-1.612-1.182-2.393-1.319-2.841-1.319h-15.5c-1.378 0-2.5 1.121-2.5 2.5v27c0 1.378 1.122 2.5 2.5 2.5h23c1.378 0 2.5-1.122 2.5-2.5v-19.5c0-0.448-0.137-1.23-1.319-2.841zM24.543 5.457c0.959 0.959 1.712 1.825 2.268 2.543h-4.811v-4.811c0.718 0.556 1.584 1.309 2.543 2.268zM28 29.5c0 0.271-0.229 0.5-0.5 0.5h-23c-0.271 0-0.5-0.229-0.5-0.5v-27c0-0.271 0.229-0.5 0.5-0.5 0 0 15.499-0 15.5 0v7c0 0.552 0.448 1 1 1h7v19.5z\"></path>\n",
        "<path d=\"M23 26h-14c-0.552 0-1-0.448-1-1s0.448-1 1-1h14c0.552 0 1 0.448 1 1s-0.448 1-1 1z\"></path>\n",
        "<path d=\"M23 22h-14c-0.552 0-1-0.448-1-1s0.448-1 1-1h14c0.552 0 1 0.448 1 1s-0.448 1-1 1z\"></path>\n",
@@ -835,11 +868,29 @@
        "  --xr-background-color-row-odd: var(--jp-layout-color2, #eeeeee);\n",
        "}\n",
        "\n",
+       "html[theme=dark],\n",
+       "body.vscode-dark {\n",
+       "  --xr-font-color0: rgba(255, 255, 255, 1);\n",
+       "  --xr-font-color2: rgba(255, 255, 255, 0.54);\n",
+       "  --xr-font-color3: rgba(255, 255, 255, 0.38);\n",
+       "  --xr-border-color: #1F1F1F;\n",
+       "  --xr-disabled-color: #515151;\n",
+       "  --xr-background-color: #111111;\n",
+       "  --xr-background-color-row-even: #111111;\n",
+       "  --xr-background-color-row-odd: #313131;\n",
+       "}\n",
+       "\n",
        ".xr-wrap {\n",
+       "  display: block;\n",
        "  min-width: 300px;\n",
        "  max-width: 700px;\n",
        "}\n",
        "\n",
+       ".xr-text-repr-fallback {\n",
+       "  /* fallback to plain text repr when CSS is not injected (untrusted notebook) */\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
        ".xr-header {\n",
        "  padding-top: 6px;\n",
        "  padding-bottom: 6px;\n",
@@ -1102,7 +1153,8 @@
        "  grid-template-columns: 125px auto;\n",
        "}\n",
        "\n",
-       ".xr-attrs dt, dd {\n",
+       ".xr-attrs dt,\n",
+       ".xr-attrs dd {\n",
        "  padding: 0;\n",
        "  margin: 0;\n",
        "  float: left;\n",
@@ -1137,67 +1189,66 @@
        "  stroke: currentColor;\n",
        "  fill: currentColor;\n",
        "}\n",
-       "</style><div class='xr-wrap'><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-7a7b6499-ea47-470d-b1b0-3f3843d103c8' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-7a7b6499-ea47-470d-b1b0-3f3843d103c8' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>chain</span>: 1</li><li><span class='xr-has-index'>draw</span>: 2</li><li><span class='xr-has-index'>x_dim_0</span>: 3</li><li><span class='xr-has-index'>x_dim_1</span>: 4</li><li><span class='xr-has-index'>x_dim_2</span>: 5</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-e34c5d86-76d8-447b-8352-b1e2377887c4' class='xr-section-summary-in' type='checkbox'  checked><label for='section-e34c5d86-76d8-447b-8352-b1e2377887c4' class='xr-section-summary' >Coordinates: <span>(5)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>chain</span></div><div class='xr-var-dims'>(chain)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0</div><input id='attrs-a5275f58-23ac-4bd7-b14b-a98605cf9fe9' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-a5275f58-23ac-4bd7-b14b-a98605cf9fe9' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-03a9703b-602a-49b7-95bf-fa5c31390a0f' class='xr-var-data-in' type='checkbox'><label for='data-03a9703b-602a-49b7-95bf-fa5c31390a0f' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>draw</span></div><div class='xr-var-dims'>(draw)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1</div><input id='attrs-d43c6827-45c2-4424-ae66-3a1450e5d120' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-d43c6827-45c2-4424-ae66-3a1450e5d120' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-75974d00-4d3f-44ff-b373-e459dd65c181' class='xr-var-data-in' type='checkbox'><label for='data-75974d00-4d3f-44ff-b373-e459dd65c181' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0, 1])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>x_dim_0</span></div><div class='xr-var-dims'>(x_dim_0)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2</div><input id='attrs-ed1bbf21-cb55-4c9f-8335-8378b23de996' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-ed1bbf21-cb55-4c9f-8335-8378b23de996' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-d65b8158-43bd-4ecb-9dac-a75ae062432d' class='xr-var-data-in' type='checkbox'><label for='data-d65b8158-43bd-4ecb-9dac-a75ae062432d' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0, 1, 2])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>x_dim_1</span></div><div class='xr-var-dims'>(x_dim_1)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3</div><input id='attrs-e1573994-2121-4dc6-b703-aa4d8b723b7f' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-e1573994-2121-4dc6-b703-aa4d8b723b7f' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-42084d2d-44c8-46dc-b65b-256a8fb508d4' class='xr-var-data-in' type='checkbox'><label for='data-42084d2d-44c8-46dc-b65b-256a8fb508d4' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0, 1, 2, 3])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>x_dim_2</span></div><div class='xr-var-dims'>(x_dim_2)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4</div><input id='attrs-45106f14-5b62-4971-b5e0-8212ace81bb7' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-45106f14-5b62-4971-b5e0-8212ace81bb7' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-b34646bd-2c08-4f2f-a44a-529538df6c3d' class='xr-var-data-in' type='checkbox'><label for='data-b34646bd-2c08-4f2f-a44a-529538df6c3d' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0, 1, 2, 3, 4])</pre></li></ul></div></li><li class='xr-section-item'><input id='section-2f5ded17-b41d-491b-8951-c00ca52f89df' class='xr-section-summary-in' type='checkbox'  checked><label for='section-2f5ded17-b41d-491b-8951-c00ca52f89df' class='xr-section-summary' >Data variables: <span>(1)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>x</span></div><div class='xr-var-dims'>(chain, draw, x_dim_0, x_dim_1, x_dim_2)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>-0.921 0.4821 ... -1.388 -0.2951</div><input id='attrs-33133029-d166-4c3a-9198-3dee7b9179e9' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-33133029-d166-4c3a-9198-3dee7b9179e9' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-9801ff24-be09-4196-b836-ccf42dc3643d' class='xr-var-data-in' type='checkbox'><label for='data-9801ff24-be09-4196-b836-ccf42dc3643d' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([[[[[-0.92101852,  0.48214847, -1.34675845,  0.80791591,\n",
-       "            0.13442397],\n",
-       "          [ 1.55928147,  0.72467009, -0.26329447,  0.77020337,\n",
-       "           -0.79385986],\n",
-       "          [ 2.56014158, -0.22522851,  1.50429511,  0.98422616,\n",
-       "            0.87701818],\n",
-       "          [ 0.2033265 , -0.46213057,  1.83291516,  0.92185653,\n",
-       "            0.02246557]],\n",
-       "\n",
-       "         [[ 0.58975218,  0.2109381 , -0.25165215,  1.07386412,\n",
-       "            0.22433061],\n",
-       "          [-0.38069638,  0.17451069, -0.91240345, -1.14499426,\n",
-       "            0.2878055 ],\n",
-       "          [-1.75288879,  0.81279251, -0.92868769,  0.805726  ,\n",
-       "           -0.79796633],\n",
-       "          [-0.73333509, -0.1039633 , -1.59234066, -0.72387975,\n",
-       "            0.73062838]],\n",
-       "\n",
-       "         [[ 0.71570935,  0.52509819, -0.36251886, -1.60016203,\n",
-       "           -0.23893154],\n",
-       "          [-0.06835913, -1.21852009,  0.82192727, -1.10977168,\n",
-       "           -2.08662438],\n",
-       "          [-0.20764243, -0.14951083, -0.60938158,  1.3045079 ,\n",
-       "            1.49413921],\n",
-       "          [-0.77821166, -0.88093741,  0.3519268 ,  0.20628867,\n",
-       "           -1.56463733]]],\n",
-       "\n",
-       "\n",
-       "        [[[ 0.70988028, -0.71212251,  0.25541438,  0.05158433,\n",
-       "            0.75728211],\n",
-       "          [-0.10089313, -2.0769755 , -3.32968542,  0.88509685,\n",
-       "            0.53247162],\n",
-       "          [ 0.73857681, -1.82011301,  0.86925206,  0.70125327,\n",
-       "           -0.35396124],\n",
-       "          [-0.49242067,  0.25316   ,  0.18691584,  0.63272798,\n",
-       "           -0.87052449]],\n",
-       "\n",
-       "         [[ 0.16249541, -0.76002895, -0.57382345,  0.31514025,\n",
-       "            0.05763214],\n",
-       "          [-0.73349012,  0.373515  , -1.79050181,  0.14774867,\n",
-       "           -0.65746071],\n",
-       "          [ 1.55594162, -0.14762212, -2.85498527,  1.43403387,\n",
-       "           -0.74873244],\n",
-       "          [ 1.0050118 ,  0.44536177, -0.15660396,  0.65484298,\n",
-       "           -0.84545377]],\n",
-       "\n",
-       "         [[ 1.78973096, -0.3529071 , -0.73334952,  0.64730247,\n",
-       "            0.21085732],\n",
-       "          [-0.87333169,  1.23147537, -0.09859236,  1.002286  ,\n",
-       "           -1.4012664 ],\n",
-       "          [-0.85472506, -0.24004629, -0.04136821, -0.90713131,\n",
-       "            0.22470241],\n",
-       "          [-0.2516493 ,  1.97247898, -0.16846266, -1.38770486,\n",
-       "           -0.29507746]]]]])</pre></li></ul></div></li><li class='xr-section-item'><input id='section-1f4645b2-2dfb-466d-9d99-39a76e65d587' class='xr-section-summary-in' type='checkbox'  checked><label for='section-1f4645b2-2dfb-466d-9d99-39a76e65d587' class='xr-section-summary' >Attributes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>created_at :</span></dt><dd>2020-06-10T18:19:03.796075</dd><dt><span>arviz_version :</span></dt><dd>0.8.3</dd></dl></div></li></ul></div></div><br></div>\n",
+       "</style><pre class='xr-text-repr-fallback'>&lt;xarray.Dataset&gt;\n",
+       "Dimensions:  (chain: 1, draw: 2, x_dim_0: 3, x_dim_1: 4, x_dim_2: 5)\n",
+       "Coordinates:\n",
+       "  * chain    (chain) int64 0\n",
+       "  * draw     (draw) int64 0 1\n",
+       "  * x_dim_0  (x_dim_0) int64 0 1 2\n",
+       "  * x_dim_1  (x_dim_1) int64 0 1 2 3\n",
+       "  * x_dim_2  (x_dim_2) int64 0 1 2 3 4\n",
+       "Data variables:\n",
+       "    x        (chain, draw, x_dim_0, x_dim_1, x_dim_2) float64 -0.08403 ... -0...\n",
+       "Attributes:\n",
+       "    created_at:     2021-02-13T14:34:09.909620\n",
+       "    arviz_version:  0.11.1</pre><div class='xr-wrap' hidden><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-c88ba89f-f45b-4462-a0ca-a3713966646e' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-c88ba89f-f45b-4462-a0ca-a3713966646e' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>chain</span>: 1</li><li><span class='xr-has-index'>draw</span>: 2</li><li><span class='xr-has-index'>x_dim_0</span>: 3</li><li><span class='xr-has-index'>x_dim_1</span>: 4</li><li><span class='xr-has-index'>x_dim_2</span>: 5</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-45493673-be94-4b1c-a6a7-68c5d4635b4c' class='xr-section-summary-in' type='checkbox'  checked><label for='section-45493673-be94-4b1c-a6a7-68c5d4635b4c' class='xr-section-summary' >Coordinates: <span>(5)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>chain</span></div><div class='xr-var-dims'>(chain)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0</div><input id='attrs-cae83b1f-56a3-4e48-b683-8fee2dbcc6e6' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-cae83b1f-56a3-4e48-b683-8fee2dbcc6e6' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-c9d1202b-442f-4dd1-b8e3-c03384dad546' class='xr-var-data-in' type='checkbox'><label for='data-c9d1202b-442f-4dd1-b8e3-c03384dad546' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>draw</span></div><div class='xr-var-dims'>(draw)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1</div><input id='attrs-754ae007-b12f-45ff-8f3e-ce598cad2295' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-754ae007-b12f-45ff-8f3e-ce598cad2295' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-4187d451-acd9-4793-86ec-9598affec9e6' class='xr-var-data-in' type='checkbox'><label for='data-4187d451-acd9-4793-86ec-9598affec9e6' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0, 1])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>x_dim_0</span></div><div class='xr-var-dims'>(x_dim_0)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2</div><input id='attrs-0394bb1b-feb3-49d0-a2ec-e978d102d203' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-0394bb1b-feb3-49d0-a2ec-e978d102d203' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-5e60d5a4-dd6a-4587-9974-851f5277bc02' class='xr-var-data-in' type='checkbox'><label for='data-5e60d5a4-dd6a-4587-9974-851f5277bc02' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0, 1, 2])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>x_dim_1</span></div><div class='xr-var-dims'>(x_dim_1)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3</div><input id='attrs-9cd47196-82c2-4469-81d1-31e99c404771' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-9cd47196-82c2-4469-81d1-31e99c404771' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-716d58c0-c3cf-42e3-bc81-6afdb1609799' class='xr-var-data-in' type='checkbox'><label for='data-716d58c0-c3cf-42e3-bc81-6afdb1609799' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0, 1, 2, 3])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>x_dim_2</span></div><div class='xr-var-dims'>(x_dim_2)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4</div><input id='attrs-80c20f2e-6850-4030-bb47-7899a297ed35' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-80c20f2e-6850-4030-bb47-7899a297ed35' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-8841e78f-fb3a-4eb8-a14f-ffea9f97094a' class='xr-var-data-in' type='checkbox'><label for='data-8841e78f-fb3a-4eb8-a14f-ffea9f97094a' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0, 1, 2, 3, 4])</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-b9fa2228-d4ca-448a-bca0-74a69b2f5da8' class='xr-section-summary-in' type='checkbox'  checked><label for='section-b9fa2228-d4ca-448a-bca0-74a69b2f5da8' class='xr-section-summary' >Data variables: <span>(1)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>x</span></div><div class='xr-var-dims'>(chain, draw, x_dim_0, x_dim_1, x_dim_2)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>-0.08403 1.102 ... -0.5577 -0.5846</div><input id='attrs-c83feffa-ab4a-46e0-80e6-64dbf8189710' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-c83feffa-ab4a-46e0-80e6-64dbf8189710' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-e72abdc4-7624-41b1-9180-ff7c405f821c' class='xr-var-data-in' type='checkbox'><label for='data-e72abdc4-7624-41b1-9180-ff7c405f821c' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([[[[[-0.08403065,  1.1017712 ,  1.62302046,  1.39574141,\n",
+       "            1.901956  ],\n",
+       "          [ 0.61743317,  0.64286807,  1.65556641,  0.35500703,\n",
+       "            1.35779885],\n",
+       "          [-2.07848838, -0.29836442, -0.85049063,  0.73218157,\n",
+       "           -1.44790928],\n",
+       "          [-0.45602564, -0.61318067, -1.40920883,  0.51587317,\n",
+       "            1.32186021]],\n",
+       "\n",
+       "         [[ 0.63302553,  0.73647764, -0.09351366,  0.56765985,\n",
+       "            1.76398645],\n",
+       "          [-0.84039966,  0.65844108, -0.69561599,  2.45493478,\n",
+       "            0.67689617],\n",
+       "          [ 0.29668126, -1.61519616, -0.6773996 , -1.6269603 ,\n",
+       "            2.48250982],\n",
+       "          [ 1.85530246, -0.86730015,  2.78300975,  0.04338923,\n",
+       "            0.06634155]],\n",
+       "\n",
+       "         [[ 0.13229749,  0.38531945,  1.76259904,  0.41885034,\n",
+       "            2.89667167],\n",
+       "...\n",
+       "          [-0.47604491,  0.50072873, -0.52789957,  1.17294914,\n",
+       "           -1.67759066]],\n",
+       "\n",
+       "         [[-0.31814332,  0.19096605, -0.22101215, -2.28617523,\n",
+       "           -1.62671503],\n",
+       "          [-0.39575603,  0.51917412, -1.78458713,  1.94001721,\n",
+       "           -0.2580746 ],\n",
+       "          [-1.44927599, -0.7534741 ,  0.65399302, -1.10388202,\n",
+       "            1.17203129],\n",
+       "          [-1.30190085,  1.49935812, -0.0981464 ,  0.47667323,\n",
+       "            0.31247077]],\n",
+       "\n",
+       "         [[ 0.14913867, -1.25433089,  1.24156086, -0.49093126,\n",
+       "            1.24566456],\n",
+       "          [ 0.91544263, -1.62292738, -1.07362398, -0.65013752,\n",
+       "            1.19963122],\n",
+       "          [ 0.39388328, -0.89078638,  0.13971883,  0.33744372,\n",
+       "            1.06058924],\n",
+       "          [-0.63608906,  0.13908276, -1.48103522, -0.55767142,\n",
+       "           -0.58462068]]]]])</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-8a07e01f-d666-458e-902c-3d2bce9df434' class='xr-section-summary-in' type='checkbox'  checked><label for='section-8a07e01f-d666-458e-902c-3d2bce9df434' class='xr-section-summary' >Attributes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>created_at :</span></dt><dd>2021-02-13T14:34:09.909620</dd><dt><span>arviz_version :</span></dt><dd>0.11.1</dd></dl></div></li></ul></div></div><br></div>\n",
        "                      </ul>\n",
        "                  </div>\n",
        "            </li>\n",
        "            \n",
        "              </ul>\n",
        "            </div>\n",
-       "            <style> /* CSS stylesheet for displaying xarray objects in jupyterlab.\n",
+       "            <style> /* CSS stylesheet for displaying InferenceData objects in jupyterlab.\n",
        " *\n",
        " */\n",
        "\n",
@@ -1212,11 +1263,29 @@
        "  --xr-background-color-row-odd: var(--jp-layout-color2, #eeeeee);\n",
        "}\n",
        "\n",
+       "html[theme=dark],\n",
+       "body.vscode-dark {\n",
+       "  --xr-font-color0: rgba(255, 255, 255, 1);\n",
+       "  --xr-font-color2: rgba(255, 255, 255, 0.54);\n",
+       "  --xr-font-color3: rgba(255, 255, 255, 0.38);\n",
+       "  --xr-border-color: #1F1F1F;\n",
+       "  --xr-disabled-color: #515151;\n",
+       "  --xr-background-color: #111111;\n",
+       "  --xr-background-color-row-even: #111111;\n",
+       "  --xr-background-color-row-odd: #313131;\n",
+       "}\n",
+       "\n",
        ".xr-wrap {\n",
+       "  display: block;\n",
        "  min-width: 300px;\n",
        "  max-width: 700px;\n",
        "}\n",
        "\n",
+       ".xr-text-repr-fallback {\n",
+       "  /* fallback to plain text repr when CSS is not injected (untrusted notebook) */\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
        ".xr-header {\n",
        "  padding-top: 6px;\n",
        "  padding-bottom: 6px;\n",
@@ -1247,6 +1316,10 @@
        "  grid-template-columns: 150px auto auto 1fr 20px 20px;\n",
        "}\n",
        "\n",
+       ".xr-sections.group-sections {\n",
+       "  grid-template-columns: auto;\n",
+       "}\n",
+       "\n",
        ".xr-section-item {\n",
        "  display: contents;\n",
        "}\n",
@@ -1557,24 +1630,22 @@
        "              <div class='xr-header'>\n",
        "                <div class=\"xr-obj-type\">arviz.InferenceData</div>\n",
        "              </div>\n",
-       "              <ul class=\"xr-sections\">\n",
+       "              <ul class=\"xr-sections group-sections\">\n",
        "              \n",
        "            <li class = \"xr-section-item\">\n",
-       "                  <input id=\"idata_posterior392767b8-351c-45f0-a71f-a7363052e764\" class=\"xr-section-summary-in\" type=\"checkbox\">\n",
-       "                  <label for=\"idata_posterior392767b8-351c-45f0-a71f-a7363052e764\" class = \"xr-section-summary\">posterior</label>\n",
+       "                  <input id=\"idata_posterior86b2a889-f3bf-4ea3-bf2f-121f56c45292\" class=\"xr-section-summary-in\" type=\"checkbox\">\n",
+       "                  <label for=\"idata_posterior86b2a889-f3bf-4ea3-bf2f-121f56c45292\" class = \"xr-section-summary\">posterior</label>\n",
        "                  <div class=\"xr-section-inline-details\"></div>\n",
        "                  <div class=\"xr-section-details\">\n",
        "                      <ul id=\"xr-dataset-coord-list\" class=\"xr-var-list\">\n",
        "                          <div style=\"padding-left:2rem;\"><div><svg style=\"position: absolute; width: 0; height: 0; overflow: hidden\">\n",
        "<defs>\n",
        "<symbol id=\"icon-database\" viewBox=\"0 0 32 32\">\n",
-       "<title>Show/Hide data repr</title>\n",
        "<path d=\"M16 0c-8.837 0-16 2.239-16 5v4c0 2.761 7.163 5 16 5s16-2.239 16-5v-4c0-2.761-7.163-5-16-5z\"></path>\n",
        "<path d=\"M16 17c-8.837 0-16-2.239-16-5v6c0 2.761 7.163 5 16 5s16-2.239 16-5v-6c0 2.761-7.163 5-16 5z\"></path>\n",
        "<path d=\"M16 26c-8.837 0-16-2.239-16-5v6c0 2.761 7.163 5 16 5s16-2.239 16-5v-6c0 2.761-7.163 5-16 5z\"></path>\n",
        "</symbol>\n",
        "<symbol id=\"icon-file-text2\" viewBox=\"0 0 32 32\">\n",
-       "<title>Show/Hide attributes</title>\n",
        "<path d=\"M28.681 7.159c-0.694-0.947-1.662-2.053-2.724-3.116s-2.169-2.030-3.116-2.724c-1.612-1.182-2.393-1.319-2.841-1.319h-15.5c-1.378 0-2.5 1.121-2.5 2.5v27c0 1.378 1.122 2.5 2.5 2.5h23c1.378 0 2.5-1.122 2.5-2.5v-19.5c0-0.448-0.137-1.23-1.319-2.841zM24.543 5.457c0.959 0.959 1.712 1.825 2.268 2.543h-4.811v-4.811c0.718 0.556 1.584 1.309 2.543 2.268zM28 29.5c0 0.271-0.229 0.5-0.5 0.5h-23c-0.271 0-0.5-0.229-0.5-0.5v-27c0-0.271 0.229-0.5 0.5-0.5 0 0 15.499-0 15.5 0v7c0 0.552 0.448 1 1 1h7v19.5z\"></path>\n",
        "<path d=\"M23 26h-14c-0.552 0-1-0.448-1-1s0.448-1 1-1h14c0.552 0 1 0.448 1 1s-0.448 1-1 1z\"></path>\n",
        "<path d=\"M23 22h-14c-0.552 0-1-0.448-1-1s0.448-1 1-1h14c0.552 0 1 0.448 1 1s-0.448 1-1 1z\"></path>\n",
@@ -1597,11 +1668,29 @@
        "  --xr-background-color-row-odd: var(--jp-layout-color2, #eeeeee);\n",
        "}\n",
        "\n",
+       "html[theme=dark],\n",
+       "body.vscode-dark {\n",
+       "  --xr-font-color0: rgba(255, 255, 255, 1);\n",
+       "  --xr-font-color2: rgba(255, 255, 255, 0.54);\n",
+       "  --xr-font-color3: rgba(255, 255, 255, 0.38);\n",
+       "  --xr-border-color: #1F1F1F;\n",
+       "  --xr-disabled-color: #515151;\n",
+       "  --xr-background-color: #111111;\n",
+       "  --xr-background-color-row-even: #111111;\n",
+       "  --xr-background-color-row-odd: #313131;\n",
+       "}\n",
+       "\n",
        ".xr-wrap {\n",
+       "  display: block;\n",
        "  min-width: 300px;\n",
        "  max-width: 700px;\n",
        "}\n",
        "\n",
+       ".xr-text-repr-fallback {\n",
+       "  /* fallback to plain text repr when CSS is not injected (untrusted notebook) */\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
        ".xr-header {\n",
        "  padding-top: 6px;\n",
        "  padding-bottom: 6px;\n",
@@ -1864,7 +1953,8 @@
        "  grid-template-columns: 125px auto;\n",
        "}\n",
        "\n",
-       ".xr-attrs dt, dd {\n",
+       ".xr-attrs dt,\n",
+       ".xr-attrs dd {\n",
        "  padding: 0;\n",
        "  margin: 0;\n",
        "  float: left;\n",
@@ -1899,461 +1989,132 @@
        "  stroke: currentColor;\n",
        "  fill: currentColor;\n",
        "}\n",
-       "</style><div class='xr-wrap'><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-80260a88-e441-4c4f-8004-35ad0d77ecb2' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-80260a88-e441-4c4f-8004-35ad0d77ecb2' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>b_dim_0</span>: 10</li><li><span class='xr-has-index'>c_dim_0</span>: 3</li><li><span class='xr-has-index'>c_dim_1</span>: 4</li><li><span class='xr-has-index'>chain</span>: 1</li><li><span class='xr-has-index'>draw</span>: 100</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-adf31201-c602-43f5-a955-63936d31775a' class='xr-section-summary-in' type='checkbox'  checked><label for='section-adf31201-c602-43f5-a955-63936d31775a' class='xr-section-summary' >Coordinates: <span>(5)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>chain</span></div><div class='xr-var-dims'>(chain)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0</div><input id='attrs-a37ae681-1c4d-48a9-819e-d7315b9212ee' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-a37ae681-1c4d-48a9-819e-d7315b9212ee' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-5b02b871-aafe-4c7b-82b3-d9dab0e2a653' class='xr-var-data-in' type='checkbox'><label for='data-5b02b871-aafe-4c7b-82b3-d9dab0e2a653' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>draw</span></div><div class='xr-var-dims'>(draw)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4 5 6 ... 94 95 96 97 98 99</div><input id='attrs-8b79c5f5-519f-43a1-b2cd-a3a33ff6da7c' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-8b79c5f5-519f-43a1-b2cd-a3a33ff6da7c' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-755eaf32-ceb3-47d9-997b-d3252ae450a6' class='xr-var-data-in' type='checkbox'><label for='data-755eaf32-ceb3-47d9-997b-d3252ae450a6' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17,\n",
+       "</style><pre class='xr-text-repr-fallback'>&lt;xarray.Dataset&gt;\n",
+       "Dimensions:  (b_dim_0: 10, c_dim_0: 3, c_dim_1: 4, chain: 1, draw: 100)\n",
+       "Coordinates:\n",
+       "  * chain    (chain) int64 0\n",
+       "  * draw     (draw) int64 0 1 2 3 4 5 6 7 8 9 ... 90 91 92 93 94 95 96 97 98 99\n",
+       "  * b_dim_0  (b_dim_0) int64 0 1 2 3 4 5 6 7 8 9\n",
+       "  * c_dim_0  (c_dim_0) int64 0 1 2\n",
+       "  * c_dim_1  (c_dim_1) int64 0 1 2 3\n",
+       "Data variables:\n",
+       "    a        (chain, draw) float64 -2.135 -0.2855 -0.2226 ... 0.004506 -0.6005\n",
+       "    b        (chain, draw, b_dim_0) float64 2.316 -1.102 ... 2.333 0.08732\n",
+       "    c        (chain, draw, c_dim_0, c_dim_1) float64 -0.3045 0.1427 ... 0.5698\n",
+       "Attributes:\n",
+       "    created_at:     2021-02-13T14:34:10.676263\n",
+       "    arviz_version:  0.11.1</pre><div class='xr-wrap' hidden><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-1fbb0006-aaa9-4405-b855-fcc92fb0e40f' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-1fbb0006-aaa9-4405-b855-fcc92fb0e40f' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>b_dim_0</span>: 10</li><li><span class='xr-has-index'>c_dim_0</span>: 3</li><li><span class='xr-has-index'>c_dim_1</span>: 4</li><li><span class='xr-has-index'>chain</span>: 1</li><li><span class='xr-has-index'>draw</span>: 100</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-98b343e0-5fd5-420b-b28d-675be63ff9d8' class='xr-section-summary-in' type='checkbox'  checked><label for='section-98b343e0-5fd5-420b-b28d-675be63ff9d8' class='xr-section-summary' >Coordinates: <span>(5)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>chain</span></div><div class='xr-var-dims'>(chain)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0</div><input id='attrs-6558c5ed-c9bd-4f67-8dc4-236d218bc00a' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-6558c5ed-c9bd-4f67-8dc4-236d218bc00a' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ea533bd6-cbdb-49e2-9a83-85b0974d34d5' class='xr-var-data-in' type='checkbox'><label for='data-ea533bd6-cbdb-49e2-9a83-85b0974d34d5' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>draw</span></div><div class='xr-var-dims'>(draw)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4 5 6 ... 94 95 96 97 98 99</div><input id='attrs-47853f61-a254-4ffa-8155-87d1992fbf13' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-47853f61-a254-4ffa-8155-87d1992fbf13' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-9a939973-6375-415c-a57d-bb7dc590daae' class='xr-var-data-in' type='checkbox'><label for='data-9a939973-6375-415c-a57d-bb7dc590daae' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17,\n",
        "       18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,\n",
        "       36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,\n",
        "       54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71,\n",
        "       72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,\n",
-       "       90, 91, 92, 93, 94, 95, 96, 97, 98, 99])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>b_dim_0</span></div><div class='xr-var-dims'>(b_dim_0)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4 5 6 7 8 9</div><input id='attrs-506a49c5-ed38-4756-a0ff-45102ddb2385' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-506a49c5-ed38-4756-a0ff-45102ddb2385' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-f9b250db-05fb-443f-b677-0550aa838acc' class='xr-var-data-in' type='checkbox'><label for='data-f9b250db-05fb-443f-b677-0550aa838acc' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>c_dim_0</span></div><div class='xr-var-dims'>(c_dim_0)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2</div><input id='attrs-a11f4c0c-76aa-4ce8-8c71-4b54cb72ff6b' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-a11f4c0c-76aa-4ce8-8c71-4b54cb72ff6b' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-9d1dc8e2-11d4-4131-9021-2a0b3c3c0641' class='xr-var-data-in' type='checkbox'><label for='data-9d1dc8e2-11d4-4131-9021-2a0b3c3c0641' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0, 1, 2])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>c_dim_1</span></div><div class='xr-var-dims'>(c_dim_1)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3</div><input id='attrs-8e404cf3-f613-4b4f-8c1c-c41b768afd76' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-8e404cf3-f613-4b4f-8c1c-c41b768afd76' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-c6d24345-0495-4033-ad3d-053e1d3889f7' class='xr-var-data-in' type='checkbox'><label for='data-c6d24345-0495-4033-ad3d-053e1d3889f7' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0, 1, 2, 3])</pre></li></ul></div></li><li class='xr-section-item'><input id='section-2a1124aa-96dc-457e-918e-ef68a888edb3' class='xr-section-summary-in' type='checkbox'  checked><label for='section-2a1124aa-96dc-457e-918e-ef68a888edb3' class='xr-section-summary' >Data variables: <span>(3)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>a</span></div><div class='xr-var-dims'>(chain, draw)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>-0.9868 -0.9059 ... -0.08585 0.2419</div><input id='attrs-07a7bc66-d9eb-4abc-9ffe-efa3b000d88e' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-07a7bc66-d9eb-4abc-9ffe-efa3b000d88e' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-a9ad6d85-c3e3-4520-8d5d-1e23337a0fc8' class='xr-var-data-in' type='checkbox'><label for='data-a9ad6d85-c3e3-4520-8d5d-1e23337a0fc8' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([[-0.98680087, -0.9059364 , -0.14165402, -0.58265096,  0.82603876,\n",
-       "        -2.46304762, -0.68751032, -0.44797211,  0.4767166 ,  1.20762507,\n",
-       "         1.7683901 ,  0.49919964,  0.39169713,  0.24818252,  0.76896913,\n",
-       "         1.35602941,  0.16012735, -0.40869246,  1.57454222, -0.88422323,\n",
-       "        -0.8032874 ,  0.97983047,  0.62862413,  0.86092572,  1.28611767,\n",
-       "         0.47059445, -1.94828812,  0.77238202,  1.34715668,  0.5508723 ,\n",
-       "         0.37690772,  0.36441709,  1.00628099, -0.25510614, -0.15580706,\n",
-       "        -2.12785677,  1.51691814, -1.11203406,  0.15787474,  0.49807416,\n",
-       "         0.59557061,  1.31281552,  0.81375214, -0.23155098,  0.33571588,\n",
-       "        -0.57863365, -0.28264525, -0.09610144, -0.54420598, -0.6172331 ,\n",
-       "        -0.7610177 , -0.46448357, -0.35348013,  0.14209789, -1.24727987,\n",
-       "         0.01894142,  1.5554319 , -1.58654114, -1.04792336,  1.60558452,\n",
-       "        -1.55497944,  0.42248955, -0.01063844,  0.37625908,  0.32187246,\n",
-       "        -0.90741871,  0.70642742,  1.4723044 , -1.05279937,  0.48145175,\n",
-       "        -0.70126199, -0.93931202, -0.48064917,  0.0822739 , -1.60523997,\n",
-       "         1.33511812,  0.80697787, -0.43798262, -1.12562896,  0.99484913,\n",
-       "        -1.57580105,  1.12748292, -1.16916992,  0.26178148,  0.10459207,\n",
-       "         1.53168163,  0.43148325, -0.05799433,  0.48346788,  0.34411697,\n",
-       "         0.00835765, -0.99452364, -2.11526315,  1.13121207, -0.30909674,\n",
-       "         0.43876463, -0.3636197 , -0.3043917 , -0.08585393,  0.2418645 ]])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span>b</span></div><div class='xr-var-dims'>(chain, draw, b_dim_0)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>-0.6033 0.6579 ... 0.09994 -0.8692</div><input id='attrs-2873e3c8-612a-46b6-9407-f9c15710a4be' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-2873e3c8-612a-46b6-9407-f9c15710a4be' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-b5c9ba58-73a5-4867-b2e5-a7867e37dc0c' class='xr-var-data-in' type='checkbox'><label for='data-b5c9ba58-73a5-4867-b2e5-a7867e37dc0c' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([[[-6.03344744e-01,  6.57856984e-01,  3.44548919e-01,\n",
-       "          3.00142169e-01, -5.26833619e-01,  3.29689332e-01,\n",
-       "         -1.31465481e-01, -1.11881896e+00,  1.18846301e+00,\n",
-       "         -1.21813909e+00],\n",
-       "        [ 1.17352705e+00,  4.49529097e-01, -7.83719405e-01,\n",
-       "          7.05153489e-01,  7.20493088e-01, -1.65224704e-01,\n",
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-       "         -7.49085529e-03,  3.06447557e-01,  2.23443530e-01,\n",
-       "         -3.40244842e-01,  6.77448331e-01, -3.36543496e-01,\n",
-       "          6.80560314e-01],\n",
-       "        [-3.35381614e-01,  6.95560434e-01, -2.09844097e+00,\n",
-       "         -1.48140570e-01,  1.06206977e+00,  4.83670858e-01,\n",
-       "          1.37422713e+00,  2.39302467e-02, -1.44550523e+00,\n",
-       "         -4.00853417e-01],\n",
-       "        [ 1.38346888e+00,  2.46196976e-01, -1.38661231e+00,\n",
-       "         -4.20661480e-01, -2.17158519e+00,  3.07335846e+00,\n",
-       "          8.66320838e-01, -1.72027291e-01, -9.30506940e-01,\n",
-       "          5.68491948e-01],\n",
-       "        [ 1.06352608e+00,  2.81620386e-01, -1.97817740e-01,\n",
-       "         -2.14577532e+00,  2.29294270e-01,  3.12411147e+00,\n",
-       "          7.62559840e-01,  1.81468594e+00,  1.43288098e+00,\n",
-       "          5.32036252e-01],\n",
-       "        [ 3.11654901e-01, -6.79593089e-01, -1.10736614e-01,\n",
-       "          5.31694243e-01,  1.81166493e-01,  1.31900282e-02,\n",
-       "         -7.28565581e-01,  6.02154831e-01, -1.57540076e+00,\n",
-       "          9.00097407e-01],\n",
-       "        [-8.87564777e-01, -3.37687525e-01, -1.30373687e+00,\n",
-       "         -9.25264876e-01,  4.57674318e-01,  5.71552621e-01,\n",
-       "          2.51754343e-01, -4.64932263e-01, -4.72336574e-01,\n",
-       "          1.28690059e+00],\n",
-       "        [ 1.02980926e+00,  1.78406543e+00,  1.38812486e-01,\n",
-       "         -5.39937070e-01, -1.21971756e+00,  2.35179228e-01,\n",
-       "          1.24813394e+00, -1.24967058e-01, -2.50217608e-01,\n",
-       "          1.49065306e+00],\n",
-       "        [ 1.56241734e+00, -7.81406889e-01,  1.69282258e-01,\n",
-       "          2.00136890e-02,  6.46874187e-01, -5.53988599e-01,\n",
-       "         -7.71398502e-01, -1.65553790e-01,  1.41919080e+00,\n",
-       "          1.83966288e+00],\n",
-       "        [-9.70244301e-01, -1.50092407e-01, -6.91250822e-01,\n",
-       "         -9.06007541e-02, -5.81764871e-01, -1.58418757e+00,\n",
-       "         -2.66046527e-01,  8.53074072e-01, -4.97415255e-01,\n",
-       "         -1.29947986e+00],\n",
-       "        [ 1.99111421e+00,  1.23112274e+00, -1.78580677e+00,\n",
-       "          2.16137216e+00, -1.17897327e+00,  7.25677361e-01,\n",
-       "          1.01507866e+00,  1.88055973e+00, -1.30712310e+00,\n",
-       "          5.53177858e-01],\n",
-       "        [ 5.71461316e-02,  5.68856855e-01,  2.88807926e+00,\n",
-       "         -1.92675717e+00,  1.34578245e+00,  1.53407411e+00,\n",
-       "          1.42921355e+00,  2.52360499e-01, -6.75064473e-01,\n",
-       "          5.50440103e-01],\n",
-       "        [ 1.93773586e+00, -1.65924138e+00,  1.31565550e-01,\n",
-       "         -5.01845167e-01, -7.52207811e-01,  1.13312168e+00,\n",
-       "         -8.19930360e-01,  1.16956479e+00,  4.89560102e-01,\n",
-       "         -2.45021515e-01],\n",
-       "        [-1.24447459e+00, -8.24150251e-01, -4.02139271e-01,\n",
-       "         -1.79798795e-01,  9.54804719e-02,  2.09432890e-01,\n",
-       "         -8.17885396e-01,  1.66873702e-02, -4.70928568e-01,\n",
-       "         -3.95689545e-01],\n",
-       "        [ 2.94331755e+00, -7.41260735e-01, -1.02319782e+00,\n",
-       "          7.62810656e-01, -4.06377583e-01, -9.88152610e-01,\n",
-       "         -7.57353383e-01,  3.54717129e-01,  3.96599643e-01,\n",
-       "         -9.43634206e-01],\n",
-       "        [-9.72298335e-01, -2.21009164e-01, -1.50039749e+00,\n",
-       "         -1.19028865e+00,  1.23098588e+00,  8.24026217e-01,\n",
-       "          9.89718193e-01, -1.08755983e+00, -7.23422655e-01,\n",
-       "         -5.55824284e-01],\n",
-       "        [-2.01336961e+00, -1.18368155e+00,  6.07639897e-01,\n",
-       "         -6.21729584e-01,  8.93307247e-01,  8.90775341e-01,\n",
-       "          1.62274563e+00,  1.32730613e-01,  6.85716699e-01,\n",
-       "          8.69952474e-02],\n",
-       "        [-8.10719963e-02, -5.82244926e-01, -9.69985962e-01,\n",
-       "         -1.17045115e+00, -1.21138420e+00, -1.70122241e-02,\n",
-       "         -2.37457374e+00,  9.35439412e-01,  1.10825128e+00,\n",
-       "         -3.47995753e-01],\n",
-       "        [ 1.33937444e+00, -9.35798276e-01,  1.59561402e-01,\n",
-       "         -4.02179819e-01, -9.76486640e-01, -1.06721930e+00,\n",
-       "         -8.43611920e-01, -1.18128172e+00, -6.39559238e-01,\n",
-       "          1.62521906e-01],\n",
-       "        [-1.43312551e-01, -1.04899410e-01, -1.68039437e-01,\n",
-       "         -2.57146952e-01,  5.13336071e-01, -2.48813418e+00,\n",
-       "         -4.84536874e-02,  1.48673137e-01, -5.85951279e-02,\n",
-       "          1.45592643e-01],\n",
-       "        [-1.75932522e+00,  3.03800033e-01, -5.04784587e-01,\n",
-       "         -1.43869784e+00,  1.01865411e+00, -1.67030075e+00,\n",
-       "          1.17725759e-01,  1.17619272e+00, -2.00344371e+00,\n",
-       "         -3.17190387e-01],\n",
-       "        [ 3.66239160e-01, -5.47566042e-01,  4.50547053e-01,\n",
-       "         -1.25180845e-01,  1.49339980e+00, -1.34963027e+00,\n",
-       "          7.67871627e-01, -1.87758006e-01, -1.59258526e-02,\n",
-       "          1.07390467e-01],\n",
-       "        [ 3.11521091e-01, -1.18972440e+00, -8.59059410e-01,\n",
-       "         -5.85899068e-01, -4.82552116e-01, -1.26256390e-02,\n",
-       "          1.15691018e+00, -1.21316822e+00, -1.40787253e+00,\n",
-       "         -3.19397863e-01],\n",
-       "        [ 1.36859047e+00,  1.78506695e+00, -1.15740938e+00,\n",
-       "          2.39921706e+00, -1.71503695e-01,  3.61854266e-01,\n",
-       "          1.57023463e-01,  7.17949728e-01,  1.12866189e+00,\n",
-       "         -1.01301265e+00],\n",
-       "        [-2.09989671e-01, -2.06284735e-01, -8.75787865e-01,\n",
-       "         -1.66506882e+00, -4.20230031e-01, -5.52696516e-01,\n",
-       "          1.07186780e+00,  1.16156231e+00,  1.65461615e+00,\n",
-       "         -1.52416303e+00],\n",
-       "        [-8.46637659e-02, -6.51837425e-01, -6.24534211e-01,\n",
-       "         -2.76999607e+00, -9.86229599e-01, -1.41828203e-01,\n",
-       "         -2.89176599e-01, -6.24649233e-02,  7.53189297e-01,\n",
-       "         -2.34088044e-01],\n",
-       "        [-3.36843106e-01,  7.88345196e-01,  1.92022029e-01,\n",
-       "         -1.09731124e+00, -1.42687165e-01, -2.05082193e-01,\n",
-       "          1.31160565e+00,  3.33380332e-01, -7.40996133e-01,\n",
-       "          1.69567078e-01],\n",
-       "        [-9.48397746e-01,  2.70348537e-01,  5.62477221e-01,\n",
-       "          5.58138565e-01, -2.15826773e-01,  2.15577478e+00,\n",
-       "          2.17412607e+00, -7.49010535e-01, -1.36451263e+00,\n",
-       "          7.12519586e-01],\n",
-       "        [ 1.56516891e-02, -5.21686997e-01,  7.22239695e-01,\n",
-       "         -9.37438397e-01,  1.59894256e-01, -5.96482530e-01,\n",
-       "         -2.19030354e+00,  5.46120049e-01, -6.60551232e-01,\n",
-       "          1.59589131e-02],\n",
-       "        [ 3.37102184e-01, -5.65722248e-01,  4.96497440e-01,\n",
-       "         -4.68222937e-01,  8.36226993e-01,  2.94908812e-01,\n",
-       "         -4.90975260e-01,  1.19590527e+00, -7.82249210e-01,\n",
-       "          3.59347055e-01],\n",
-       "        [ 9.61275614e-01, -5.13502622e-01,  1.01460589e+00,\n",
-       "          2.83716582e-01, -5.39229538e-01,  8.45856484e-01,\n",
-       "         -1.63622278e+00, -9.49820775e-01, -6.45886085e-01,\n",
-       "          1.11738800e+00],\n",
-       "        [ 9.97949389e-02,  1.12308263e+00,  8.41011812e-03,\n",
-       "          4.31484885e-01,  7.82874480e-02,  2.29647167e-01,\n",
-       "         -1.19929310e-01, -6.22903746e-01, -2.63618426e+00,\n",
-       "         -1.31847579e+00],\n",
-       "        [-5.78308065e-01, -1.84016526e-01,  1.81146195e-01,\n",
-       "         -8.75167273e-01,  8.92967631e-02, -4.88247804e-01,\n",
-       "         -1.26484259e+00, -1.62428317e+00, -2.47432140e+00,\n",
-       "          2.86863092e-01],\n",
-       "        [ 1.45782588e+00,  1.22470928e+00,  1.37059960e+00,\n",
-       "          5.15895151e-01,  5.67213541e-01, -8.12625513e-01,\n",
-       "         -1.05703323e+00,  1.23446732e+00,  5.72544579e-01,\n",
-       "          1.16824142e+00],\n",
-       "        [ 7.91618805e-01, -1.51390117e+00, -9.58717632e-01,\n",
-       "         -1.33186174e+00,  2.44159781e-01,  1.42667075e+00,\n",
-       "         -1.93043316e-01,  1.13969662e+00,  1.14080836e+00,\n",
-       "         -7.47563604e-01],\n",
-       "        [-1.25234755e+00, -4.89458697e-01, -1.05419689e+00,\n",
-       "         -3.61371620e-01, -1.35641263e-01,  9.26537840e-01,\n",
-       "          1.94874715e+00,  3.53143290e-01, -1.00025902e+00,\n",
-       "         -8.37607504e-01],\n",
-       "        [ 9.43426257e-01, -1.41564714e+00,  1.45535179e-01,\n",
-       "         -2.46613292e+00, -9.92801870e-01,  1.77217495e+00,\n",
-       "         -6.32787481e-01,  3.53400806e-01,  5.75950370e-02,\n",
-       "         -5.78596946e-01],\n",
-       "        [-6.32177724e-01,  1.04906198e+00,  1.15932725e+00,\n",
-       "         -6.95320997e-01, -2.09687542e+00,  1.13367200e+00,\n",
-       "         -1.07877931e-03, -9.22808422e-02, -6.24162045e-01,\n",
-       "         -4.88116120e-01],\n",
-       "        [-2.89103638e-01,  1.46969037e+00,  1.50983980e+00,\n",
-       "         -2.35424926e-01,  7.09090381e-02,  4.89436311e-01,\n",
-       "          1.37263363e+00,  1.46094496e-01, -7.05583452e-01,\n",
-       "          3.06267245e-01],\n",
-       "        [ 1.11293488e+00, -1.25152498e+00,  1.74525215e-01,\n",
-       "          4.06811364e-01, -1.83488761e-03,  1.81938683e-01,\n",
-       "          1.29059447e+00,  1.17073440e+00,  9.99376107e-02,\n",
-       "         -8.69229686e-01]]])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span>c</span></div><div class='xr-var-dims'>(chain, draw, c_dim_0, c_dim_1)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>-0.1873 0.08068 ... -0.7178 -0.4593</div><input id='attrs-fbe021c5-81d8-4a84-b6b2-7cd0959ce736' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-fbe021c5-81d8-4a84-b6b2-7cd0959ce736' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-bebbf2b3-10ca-45ad-9722-54f695f75c56' class='xr-var-data-in' type='checkbox'><label for='data-bebbf2b3-10ca-45ad-9722-54f695f75c56' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([[[[-0.18733941,  0.08068124, -0.74981289,  1.14908319],\n",
-       "         [-0.23887625,  0.77923397, -1.09384671,  0.85300368],\n",
-       "         [ 0.11497364, -0.79956367, -0.65401389, -0.6553763 ]],\n",
-       "\n",
-       "        [[-0.0640023 , -0.3453749 , -0.21576098,  0.98122925],\n",
-       "         [-0.39585305,  0.49347018,  0.63004415,  0.85404986],\n",
-       "         [ 1.18751139, -0.85181631,  0.11780613,  0.80907842]],\n",
-       "\n",
-       "        [[ 1.65335708,  0.53322719,  0.30460134, -0.41337594],\n",
-       "         [ 1.76889868,  0.8506907 ,  1.42290637,  1.08454681],\n",
-       "         [ 1.37409373, -0.99599541, -0.12550746,  0.9409458 ]],\n",
-       "\n",
-       "        ...,\n",
-       "\n",
-       "        [[ 2.03811654,  0.96546731, -0.39226401,  0.74229003],\n",
-       "         [ 0.19321198, -1.24549524, -1.60397554, -0.34112993],\n",
-       "         [ 0.96758733, -1.13541144,  0.7103624 , -0.39037624]],\n",
-       "\n",
-       "        [[-2.70188938,  0.75490061, -0.14130135,  1.14492753],\n",
-       "         [-0.4482847 ,  0.69491268, -0.14514184, -0.74449329],\n",
-       "         [-0.71947702,  0.04130831,  0.67365237, -0.64708764]],\n",
-       "\n",
-       "        [[ 0.99678923,  0.74509977, -1.61810631,  1.25375022],\n",
-       "         [ 1.23621678, -0.53127017,  0.16684273,  0.56542842],\n",
-       "         [-1.31944647,  1.35283207, -0.71780795, -0.45929745]]]])</pre></li></ul></div></li><li class='xr-section-item'><input id='section-97873648-a7d1-4d70-9e86-a55c072ba8d7' class='xr-section-summary-in' type='checkbox'  checked><label for='section-97873648-a7d1-4d70-9e86-a55c072ba8d7' class='xr-section-summary' >Attributes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>created_at :</span></dt><dd>2020-06-10T18:19:03.842568</dd><dt><span>arviz_version :</span></dt><dd>0.8.3</dd></dl></div></li></ul></div></div><br></div>\n",
+       "       90, 91, 92, 93, 94, 95, 96, 97, 98, 99])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>b_dim_0</span></div><div class='xr-var-dims'>(b_dim_0)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4 5 6 7 8 9</div><input id='attrs-af7465b7-1223-46d4-b2b8-6669918ae3b1' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-af7465b7-1223-46d4-b2b8-6669918ae3b1' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ca4cb628-1d65-4613-b538-5223892fc306' class='xr-var-data-in' type='checkbox'><label for='data-ca4cb628-1d65-4613-b538-5223892fc306' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>c_dim_0</span></div><div class='xr-var-dims'>(c_dim_0)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2</div><input id='attrs-6affb423-1d2e-48ce-80aa-ba9e8e25c52e' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-6affb423-1d2e-48ce-80aa-ba9e8e25c52e' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-c8e81cd4-2350-4448-b92e-280412a06098' class='xr-var-data-in' type='checkbox'><label for='data-c8e81cd4-2350-4448-b92e-280412a06098' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0, 1, 2])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>c_dim_1</span></div><div class='xr-var-dims'>(c_dim_1)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3</div><input id='attrs-47d59e28-31db-4d15-bf55-1bd5bab8d026' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-47d59e28-31db-4d15-bf55-1bd5bab8d026' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-52a83fbf-3ab5-41af-8ea7-819434481f53' class='xr-var-data-in' type='checkbox'><label for='data-52a83fbf-3ab5-41af-8ea7-819434481f53' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0, 1, 2, 3])</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-5006caa5-acef-4731-8001-95841baf4562' class='xr-section-summary-in' type='checkbox'  checked><label for='section-5006caa5-acef-4731-8001-95841baf4562' class='xr-section-summary' >Data variables: <span>(3)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>a</span></div><div class='xr-var-dims'>(chain, draw)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>-2.135 -0.2855 ... 0.004506 -0.6005</div><input id='attrs-0aa66c34-b75b-4b1d-9b93-961c50003a85' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-0aa66c34-b75b-4b1d-9b93-961c50003a85' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-03bee9aa-8bc1-4797-849a-a62b0fc603d5' class='xr-var-data-in' type='checkbox'><label for='data-03bee9aa-8bc1-4797-849a-a62b0fc603d5' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([[-2.13544683, -0.28549645, -0.22264909, -0.93293274, -0.70340885,\n",
+       "        -1.6431039 ,  1.12579702, -0.07256171, -0.94842639, -0.97520597,\n",
+       "        -0.97121903,  1.55988844,  0.16842664,  1.20203192, -1.451998  ,\n",
+       "         1.1034488 ,  0.30540674, -0.9740496 ,  0.99117123, -0.02244417,\n",
+       "         0.21356687,  0.1782902 , -0.2357763 ,  1.89391712,  0.05707509,\n",
+       "         0.14578992, -0.10872117, -0.16515133,  1.45943019,  0.464367  ,\n",
+       "         2.24189297, -0.98596886,  0.18449422, -0.53079197, -0.78859255,\n",
+       "         1.93031216, -0.93846074,  0.59057879, -0.54179058,  1.03929777,\n",
+       "        -0.47815684, -1.00029637,  0.25930499, -1.08620067,  0.10544712,\n",
+       "        -0.33510953,  2.7918108 , -0.48445729,  1.35519298, -1.07978766,\n",
+       "         1.2403764 , -0.48409421, -0.29797492,  1.74034758,  0.26002921,\n",
+       "        -1.60571308,  2.08458728, -0.18937691, -0.73170727,  1.22968393,\n",
+       "         0.44830485,  0.88102682, -1.4087653 ,  0.82006584,  0.01361757,\n",
+       "        -0.68680755, -2.12192547,  0.48157838, -0.99493753, -1.1710843 ,\n",
+       "        -0.00324472, -0.34669479,  0.75617941,  0.13809252, -0.00293795,\n",
+       "         1.54383557,  0.75466282,  0.70882703, -0.76888358,  0.88078721,\n",
+       "        -0.98875811, -0.66684028, -0.17737408, -0.19195556, -0.52677063,\n",
+       "        -0.3035301 ,  0.33827756, -1.21031729, -0.66538835,  1.24311501,\n",
+       "        -0.30734044, -1.13224426, -0.23575202,  0.74078858,  0.45278921,\n",
+       "         1.40622741, -0.68259759,  0.16404416,  0.00450633, -0.60046321]])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>b</span></div><div class='xr-var-dims'>(chain, draw, b_dim_0)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>2.316 -1.102 ... 2.333 0.08732</div><input id='attrs-86917e97-01b3-4bdb-9629-4612068cc76b' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-86917e97-01b3-4bdb-9629-4612068cc76b' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-5490d7c0-4394-4316-948b-dcfcbc1b9fe9' class='xr-var-data-in' type='checkbox'><label for='data-5490d7c0-4394-4316-948b-dcfcbc1b9fe9' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([[[ 2.31594064e+00, -1.10239464e+00, -9.20590630e-02,\n",
+       "         -1.00067395e+00, -1.00982365e-01,  3.12551977e-01,\n",
+       "          1.30889742e-01,  1.01067763e+00, -1.93728644e+00,\n",
+       "         -1.96631559e+00],\n",
+       "        [ 2.88912815e-01,  8.64017095e-01, -4.15148499e-01,\n",
+       "         -1.52566003e+00,  7.65670834e-01, -1.24231992e+00,\n",
+       "         -1.57352946e-01,  2.13860180e-01,  3.64663713e-01,\n",
+       "         -2.73271702e-01],\n",
+       "        [-8.25991982e-01,  1.84076957e+00,  1.08514639e+00,\n",
+       "         -7.08543063e-01, -2.00597994e-01,  4.02011481e-01,\n",
+       "         -2.23579981e+00, -1.15752412e+00, -4.43020640e-01,\n",
+       "          1.39158209e+00],\n",
+       "        [ 2.12319852e-01,  1.57386014e-01, -2.80671862e-01,\n",
+       "         -9.28866866e-01, -6.99740772e-01, -5.80207944e-01,\n",
+       "          8.39600405e-02, -3.95043366e-01,  5.60529521e-01,\n",
+       "          1.96818442e-01],\n",
+       "        [ 9.31745987e-02, -1.76612249e+00,  1.26661338e+00,\n",
+       "         -8.41517795e-01, -1.09134025e+00,  1.21106377e+00,\n",
+       "         -5.89417432e-02,  4.90687025e-01, -1.45992378e+00,\n",
+       "          1.10820280e+00],\n",
+       "...\n",
+       "        [ 4.03376765e-01,  9.42158780e-01,  1.86929928e-01,\n",
+       "          3.19502814e-01, -1.52896559e+00,  9.65853447e-02,\n",
+       "         -5.83760878e-01,  2.32820817e-01,  6.85423182e-01,\n",
+       "         -9.65070463e-01],\n",
+       "        [ 3.89276446e-02, -5.24983298e-01,  8.76155496e-01,\n",
+       "          1.04176946e+00, -2.85950102e-01, -7.23899820e-01,\n",
+       "          2.79438377e-01, -6.63992916e-01, -2.59889488e-01,\n",
+       "          8.53932257e-01],\n",
+       "        [-5.84313907e-01,  1.16472351e+00,  1.54747379e+00,\n",
+       "          4.25130441e-01, -1.12248710e+00,  5.99760270e-01,\n",
+       "         -9.37162916e-01,  7.98654999e-01, -2.03388722e-01,\n",
+       "         -1.37138445e-01],\n",
+       "        [-9.58500168e-01, -2.15828236e-01, -2.20728934e-02,\n",
+       "         -3.64141198e-01,  2.74506372e-01,  5.47167487e-01,\n",
+       "          1.50047521e+00, -1.52031173e+00, -5.09673590e-01,\n",
+       "         -1.17376898e+00],\n",
+       "        [-1.47383906e+00,  6.66256624e-01,  7.81715878e-01,\n",
+       "          1.88467870e-01,  1.13442069e+00, -1.85172363e+00,\n",
+       "          7.40123308e-01,  1.26232317e+00,  2.33276361e+00,\n",
+       "          8.73152677e-02]]])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>c</span></div><div class='xr-var-dims'>(chain, draw, c_dim_0, c_dim_1)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>-0.3045 0.1427 ... -0.6531 0.5698</div><input id='attrs-a03942c0-7575-47e6-b973-d19222502182' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-a03942c0-7575-47e6-b973-d19222502182' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-23c8eb8f-bb94-477d-a931-01ffe9874525' class='xr-var-data-in' type='checkbox'><label for='data-23c8eb8f-bb94-477d-a931-01ffe9874525' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([[[[-3.04502571e-01,  1.42737459e-01, -9.71657962e-02,\n",
+       "          -8.93188910e-01],\n",
+       "         [ 3.04563145e-01,  5.24937448e-04, -1.09452361e+00,\n",
+       "          -1.35199712e+00],\n",
+       "         [ 4.12119313e-01, -8.82643195e-01, -7.04691324e-01,\n",
+       "          -1.25075637e+00]],\n",
+       "\n",
+       "        [[-5.52101365e-01,  1.11897936e+00,  2.58616801e-01,\n",
+       "          -4.08383300e-02],\n",
+       "         [-1.72855282e+00, -1.44721457e+00,  1.94643245e+00,\n",
+       "           4.32584013e-01],\n",
+       "         [-3.94882193e-01,  7.70659226e-01, -1.61441696e+00,\n",
+       "          -1.72500340e+00]],\n",
+       "\n",
+       "        [[-3.40557372e-01,  1.49244307e+00, -8.79396841e-01,\n",
+       "           6.19749682e-01],\n",
+       "         [ 5.86304569e-02, -1.29708098e+00, -8.91758881e-01,\n",
+       "           8.60487195e-01],\n",
+       "         [-6.46215644e-01, -1.24231084e+00,  1.02951259e-01,\n",
+       "          -1.14116359e+00]],\n",
+       "...\n",
+       "        [[-2.51927923e-01,  4.86355686e-01,  1.02337110e-01,\n",
+       "          -3.91983265e-01],\n",
+       "         [-3.16304455e-01, -9.77624093e-01,  7.47037624e-01,\n",
+       "           1.47022330e+00],\n",
+       "         [ 2.75938704e+00, -1.45844332e+00,  6.05000304e-01,\n",
+       "          -1.09534187e+00]],\n",
+       "\n",
+       "        [[ 1.32989709e+00, -1.48206442e-01,  1.41643986e+00,\n",
+       "           3.21362235e-01],\n",
+       "         [ 7.14366149e-01, -8.96126440e-01,  1.25597256e+00,\n",
+       "           1.47682789e-01],\n",
+       "         [ 5.90506409e-01, -7.26727058e-01,  4.73393503e-01,\n",
+       "          -7.49608085e-01]],\n",
+       "\n",
+       "        [[-4.48031599e-01,  1.30492399e+00, -8.19654000e-02,\n",
+       "          -6.30742208e-01],\n",
+       "         [ 6.57215837e-01, -4.16781732e-01,  1.76999107e+00,\n",
+       "           2.95505700e-01],\n",
+       "         [-1.46068664e-01, -1.72669102e+00, -6.53139048e-01,\n",
+       "           5.69801286e-01]]]])</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-b6f7281a-00be-4569-a1fd-0bb356eb46d9' class='xr-section-summary-in' type='checkbox'  checked><label for='section-b6f7281a-00be-4569-a1fd-0bb356eb46d9' class='xr-section-summary' >Attributes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>created_at :</span></dt><dd>2021-02-13T14:34:10.676263</dd><dt><span>arviz_version :</span></dt><dd>0.11.1</dd></dl></div></li></ul></div></div><br></div>\n",
        "                      </ul>\n",
        "                  </div>\n",
        "            </li>\n",
        "            \n",
        "              </ul>\n",
        "            </div>\n",
-       "            <style> /* CSS stylesheet for displaying xarray objects in jupyterlab.\n",
+       "            <style> /* CSS stylesheet for displaying InferenceData objects in jupyterlab.\n",
        " *\n",
        " */\n",
        "\n",
@@ -2368,11 +2129,29 @@
        "  --xr-background-color-row-odd: var(--jp-layout-color2, #eeeeee);\n",
        "}\n",
        "\n",
+       "html[theme=dark],\n",
+       "body.vscode-dark {\n",
+       "  --xr-font-color0: rgba(255, 255, 255, 1);\n",
+       "  --xr-font-color2: rgba(255, 255, 255, 0.54);\n",
+       "  --xr-font-color3: rgba(255, 255, 255, 0.38);\n",
+       "  --xr-border-color: #1F1F1F;\n",
+       "  --xr-disabled-color: #515151;\n",
+       "  --xr-background-color: #111111;\n",
+       "  --xr-background-color-row-even: #111111;\n",
+       "  --xr-background-color-row-odd: #313131;\n",
+       "}\n",
+       "\n",
        ".xr-wrap {\n",
+       "  display: block;\n",
        "  min-width: 300px;\n",
        "  max-width: 700px;\n",
        "}\n",
        "\n",
+       ".xr-text-repr-fallback {\n",
+       "  /* fallback to plain text repr when CSS is not injected (untrusted notebook) */\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
        ".xr-header {\n",
        "  padding-top: 6px;\n",
        "  padding-bottom: 6px;\n",
@@ -2403,6 +2182,10 @@
        "  grid-template-columns: 150px auto auto 1fr 20px 20px;\n",
        "}\n",
        "\n",
+       ".xr-sections.group-sections {\n",
+       "  grid-template-columns: auto;\n",
+       "}\n",
+       "\n",
        ".xr-section-item {\n",
        "  display: contents;\n",
        "}\n",
@@ -2717,24 +2500,22 @@
        "              <div class='xr-header'>\n",
        "                <div class=\"xr-obj-type\">arviz.InferenceData</div>\n",
        "              </div>\n",
-       "              <ul class=\"xr-sections\">\n",
+       "              <ul class=\"xr-sections group-sections\">\n",
        "              \n",
        "            <li class = \"xr-section-item\">\n",
-       "                  <input id=\"idata_posterior68fe205f-0d47-404d-8f3d-1bbb5519fc8a\" class=\"xr-section-summary-in\" type=\"checkbox\">\n",
-       "                  <label for=\"idata_posterior68fe205f-0d47-404d-8f3d-1bbb5519fc8a\" class = \"xr-section-summary\">posterior</label>\n",
+       "                  <input id=\"idata_posteriorf8a1d3a7-3fc7-4bd7-901f-4f413dde5075\" class=\"xr-section-summary-in\" type=\"checkbox\">\n",
+       "                  <label for=\"idata_posteriorf8a1d3a7-3fc7-4bd7-901f-4f413dde5075\" class = \"xr-section-summary\">posterior</label>\n",
        "                  <div class=\"xr-section-inline-details\"></div>\n",
        "                  <div class=\"xr-section-details\">\n",
        "                      <ul id=\"xr-dataset-coord-list\" class=\"xr-var-list\">\n",
        "                          <div style=\"padding-left:2rem;\"><div><svg style=\"position: absolute; width: 0; height: 0; overflow: hidden\">\n",
        "<defs>\n",
        "<symbol id=\"icon-database\" viewBox=\"0 0 32 32\">\n",
-       "<title>Show/Hide data repr</title>\n",
        "<path d=\"M16 0c-8.837 0-16 2.239-16 5v4c0 2.761 7.163 5 16 5s16-2.239 16-5v-4c0-2.761-7.163-5-16-5z\"></path>\n",
        "<path d=\"M16 17c-8.837 0-16-2.239-16-5v6c0 2.761 7.163 5 16 5s16-2.239 16-5v-6c0 2.761-7.163 5-16 5z\"></path>\n",
        "<path d=\"M16 26c-8.837 0-16-2.239-16-5v6c0 2.761 7.163 5 16 5s16-2.239 16-5v-6c0 2.761-7.163 5-16 5z\"></path>\n",
        "</symbol>\n",
        "<symbol id=\"icon-file-text2\" viewBox=\"0 0 32 32\">\n",
-       "<title>Show/Hide attributes</title>\n",
        "<path d=\"M28.681 7.159c-0.694-0.947-1.662-2.053-2.724-3.116s-2.169-2.030-3.116-2.724c-1.612-1.182-2.393-1.319-2.841-1.319h-15.5c-1.378 0-2.5 1.121-2.5 2.5v27c0 1.378 1.122 2.5 2.5 2.5h23c1.378 0 2.5-1.122 2.5-2.5v-19.5c0-0.448-0.137-1.23-1.319-2.841zM24.543 5.457c0.959 0.959 1.712 1.825 2.268 2.543h-4.811v-4.811c0.718 0.556 1.584 1.309 2.543 2.268zM28 29.5c0 0.271-0.229 0.5-0.5 0.5h-23c-0.271 0-0.5-0.229-0.5-0.5v-27c0-0.271 0.229-0.5 0.5-0.5 0 0 15.499-0 15.5 0v7c0 0.552 0.448 1 1 1h7v19.5z\"></path>\n",
        "<path d=\"M23 26h-14c-0.552 0-1-0.448-1-1s0.448-1 1-1h14c0.552 0 1 0.448 1 1s-0.448 1-1 1z\"></path>\n",
        "<path d=\"M23 22h-14c-0.552 0-1-0.448-1-1s0.448-1 1-1h14c0.552 0 1 0.448 1 1s-0.448 1-1 1z\"></path>\n",
@@ -2757,11 +2538,29 @@
        "  --xr-background-color-row-odd: var(--jp-layout-color2, #eeeeee);\n",
        "}\n",
        "\n",
+       "html[theme=dark],\n",
+       "body.vscode-dark {\n",
+       "  --xr-font-color0: rgba(255, 255, 255, 1);\n",
+       "  --xr-font-color2: rgba(255, 255, 255, 0.54);\n",
+       "  --xr-font-color3: rgba(255, 255, 255, 0.38);\n",
+       "  --xr-border-color: #1F1F1F;\n",
+       "  --xr-disabled-color: #515151;\n",
+       "  --xr-background-color: #111111;\n",
+       "  --xr-background-color-row-even: #111111;\n",
+       "  --xr-background-color-row-odd: #313131;\n",
+       "}\n",
+       "\n",
        ".xr-wrap {\n",
+       "  display: block;\n",
        "  min-width: 300px;\n",
        "  max-width: 700px;\n",
        "}\n",
        "\n",
+       ".xr-text-repr-fallback {\n",
+       "  /* fallback to plain text repr when CSS is not injected (untrusted notebook) */\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
        ".xr-header {\n",
        "  padding-top: 6px;\n",
        "  padding-bottom: 6px;\n",
@@ -3024,7 +2823,8 @@
        "  grid-template-columns: 125px auto;\n",
        "}\n",
        "\n",
-       ".xr-attrs dt, dd {\n",
+       ".xr-attrs dt,\n",
+       ".xr-attrs dd {\n",
        "  padding: 0;\n",
        "  margin: 0;\n",
        "  float: left;\n",
@@ -3059,461 +2859,116 @@
        "  stroke: currentColor;\n",
        "  fill: currentColor;\n",
        "}\n",
-       "</style><div class='xr-wrap'><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-411a87be-493f-4c46-bda7-adf8880a3292' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-411a87be-493f-4c46-bda7-adf8880a3292' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>b1</span>: 10</li><li><span class='xr-has-index'>c1</span>: 3</li><li><span class='xr-has-index'>c2</span>: 4</li><li><span class='xr-has-index'>chain</span>: 1</li><li><span class='xr-has-index'>draw</span>: 100</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-66024027-71aa-466c-b8b7-fdae5b9f0690' class='xr-section-summary-in' type='checkbox'  checked><label for='section-66024027-71aa-466c-b8b7-fdae5b9f0690' class='xr-section-summary' >Coordinates: <span>(5)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>chain</span></div><div class='xr-var-dims'>(chain)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0</div><input id='attrs-756f6bcf-6f3f-4386-be51-d94bb1550320' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-756f6bcf-6f3f-4386-be51-d94bb1550320' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-e4d5a1a9-3d22-4dcf-a867-fd8960c90b13' class='xr-var-data-in' type='checkbox'><label for='data-e4d5a1a9-3d22-4dcf-a867-fd8960c90b13' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>draw</span></div><div class='xr-var-dims'>(draw)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4 5 6 ... 94 95 96 97 98 99</div><input id='attrs-6aacbee6-f1ee-4ce0-a550-66003aea25e0' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-6aacbee6-f1ee-4ce0-a550-66003aea25e0' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-aa13cdc0-576d-42d0-aca4-6a80cfb61ddc' class='xr-var-data-in' type='checkbox'><label for='data-aa13cdc0-576d-42d0-aca4-6a80cfb61ddc' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17,\n",
+       "</style><pre class='xr-text-repr-fallback'>&lt;xarray.Dataset&gt;\n",
+       "Dimensions:  (b1: 10, c1: 3, c2: 4, chain: 1, draw: 100)\n",
+       "Coordinates:\n",
+       "  * chain    (chain) int64 0\n",
+       "  * draw     (draw) int64 0 1 2 3 4 5 6 7 8 9 ... 90 91 92 93 94 95 96 97 98 99\n",
+       "  * b1       (b1) int64 0 1 2 3 4 5 6 7 8 9\n",
+       "  * c1       (c1) int64 0 1 2\n",
+       "  * c2       (c2) int64 0 1 2 3\n",
+       "Data variables:\n",
+       "    a        (chain, draw) float64 0.1803 0.5852 -0.1851 ... 1.42 -0.05 1.146\n",
+       "    b        (chain, draw, b1) float64 0.1448 0.3689 -0.4411 ... 0.6358 0.3637\n",
+       "    c        (chain, draw, c1, c2) float64 -0.9854 1.128 ... -0.08264 -0.1264\n",
+       "Attributes:\n",
+       "    created_at:     2021-02-13T14:34:11.561406\n",
+       "    arviz_version:  0.11.1</pre><div class='xr-wrap' hidden><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-ad18512b-44e5-46d8-acd8-8a9738671ed3' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-ad18512b-44e5-46d8-acd8-8a9738671ed3' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>b1</span>: 10</li><li><span class='xr-has-index'>c1</span>: 3</li><li><span class='xr-has-index'>c2</span>: 4</li><li><span class='xr-has-index'>chain</span>: 1</li><li><span class='xr-has-index'>draw</span>: 100</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-d2748c60-8a10-4acb-93c2-cc3e0f4009a9' class='xr-section-summary-in' type='checkbox'  checked><label for='section-d2748c60-8a10-4acb-93c2-cc3e0f4009a9' class='xr-section-summary' >Coordinates: <span>(5)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>chain</span></div><div class='xr-var-dims'>(chain)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0</div><input id='attrs-6fae20cb-5085-4dbd-8499-bbbda34dfabb' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-6fae20cb-5085-4dbd-8499-bbbda34dfabb' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-86eb28cb-b170-4c13-9f4a-7c4bf4b100db' class='xr-var-data-in' type='checkbox'><label for='data-86eb28cb-b170-4c13-9f4a-7c4bf4b100db' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>draw</span></div><div class='xr-var-dims'>(draw)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4 5 6 ... 94 95 96 97 98 99</div><input id='attrs-8326f699-6310-44e8-9710-d6979eb913ca' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-8326f699-6310-44e8-9710-d6979eb913ca' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-726d6857-3b2b-43fc-8070-1e4f509dc270' class='xr-var-data-in' type='checkbox'><label for='data-726d6857-3b2b-43fc-8070-1e4f509dc270' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17,\n",
        "       18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,\n",
        "       36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,\n",
        "       54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71,\n",
        "       72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,\n",
-       "       90, 91, 92, 93, 94, 95, 96, 97, 98, 99])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>b1</span></div><div class='xr-var-dims'>(b1)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4 5 6 7 8 9</div><input id='attrs-293f1369-497e-41f8-8740-dab144d4dbb7' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-293f1369-497e-41f8-8740-dab144d4dbb7' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-f0f71144-9e35-4579-80ec-fcd995ebd864' class='xr-var-data-in' type='checkbox'><label for='data-f0f71144-9e35-4579-80ec-fcd995ebd864' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>c1</span></div><div class='xr-var-dims'>(c1)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2</div><input id='attrs-2545c3e7-ed38-41e8-b044-de28e5e57e62' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-2545c3e7-ed38-41e8-b044-de28e5e57e62' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-d454aa87-35f1-4fdc-90d1-d8fbb210a865' class='xr-var-data-in' type='checkbox'><label for='data-d454aa87-35f1-4fdc-90d1-d8fbb210a865' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0, 1, 2])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>c2</span></div><div class='xr-var-dims'>(c2)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3</div><input id='attrs-a561dfff-ec4b-49a1-9dc0-ee2f287825b7' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-a561dfff-ec4b-49a1-9dc0-ee2f287825b7' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-c5677240-cefc-46d6-8737-2d34db7b4bd6' class='xr-var-data-in' type='checkbox'><label for='data-c5677240-cefc-46d6-8737-2d34db7b4bd6' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([0, 1, 2, 3])</pre></li></ul></div></li><li class='xr-section-item'><input id='section-c1f5e944-7097-4fde-89c8-3a493923f1e1' class='xr-section-summary-in' type='checkbox'  checked><label for='section-c1f5e944-7097-4fde-89c8-3a493923f1e1' class='xr-section-summary' >Data variables: <span>(3)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>a</span></div><div class='xr-var-dims'>(chain, draw)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>0.05449 -0.7435 ... 1.77 -0.06081</div><input id='attrs-5358d108-5efa-4832-bfd5-0a5c159172fc' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-5358d108-5efa-4832-bfd5-0a5c159172fc' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-592916fa-dc99-4a5c-9a19-63065b99ebd5' class='xr-var-data-in' type='checkbox'><label for='data-592916fa-dc99-4a5c-9a19-63065b99ebd5' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([[ 0.05449388, -0.743533  , -0.32473799, -0.76209616, -0.15318108,\n",
-       "        -0.05848062,  0.97717731, -0.48588421, -0.8726501 , -0.07552945,\n",
-       "         0.83003715, -1.19688506, -1.1247065 , -0.6013013 , -0.49520942,\n",
-       "        -1.84118918, -2.59702905, -1.30659788,  0.98327226,  0.27655716,\n",
-       "        -1.82151708, -0.63585987, -0.2902761 , -1.12612464, -2.07791993,\n",
-       "        -0.13276421,  0.62298463, -0.48540343, -0.00994651, -0.11829631,\n",
-       "         1.01228631, -1.46444786, -0.78597604,  0.51325285,  0.13163611,\n",
-       "         1.09484645,  1.68969085, -0.52343559,  1.026338  ,  1.43407182,\n",
-       "        -0.7722721 , -0.57958438,  0.20528191,  0.61321184,  1.68564395,\n",
-       "        -0.30374717,  0.71144957, -0.65677733,  0.84996284, -1.30093387,\n",
-       "        -1.70843071,  0.74581651,  0.86280279,  2.27569422, -2.35786222,\n",
-       "        -0.86084899,  1.21739243,  1.5936106 ,  1.09724853, -0.26861585,\n",
-       "         2.61918066, -1.05169746, -1.0950662 ,  0.86920039, -0.45478166,\n",
-       "        -1.16591212,  0.72980447, -1.74191861, -2.17641695,  0.41770966,\n",
-       "         0.35722643,  0.30221771, -0.44295916, -0.2569641 ,  0.87502338,\n",
-       "        -0.61832058, -0.48042925, -0.6697292 , -0.42490819, -0.6803645 ,\n",
-       "         0.93372907, -0.94644329, -0.66789602, -0.60290496, -1.2474643 ,\n",
-       "        -0.38570061,  2.14155655,  1.42725836, -0.17612467, -0.34821489,\n",
-       "        -0.44672739, -1.71950312,  0.00706469,  0.45771954,  1.98270075,\n",
-       "        -0.19073369,  0.89296637,  1.2797043 ,  1.76970708, -0.0608144 ]])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span>b</span></div><div class='xr-var-dims'>(chain, draw, b1)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>0.3839 -0.4249 ... -0.1143 0.9299</div><input id='attrs-eb08c5e4-6a51-47bc-b8ae-ca1417daec1f' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-eb08c5e4-6a51-47bc-b8ae-ca1417daec1f' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-d2ecde82-be76-4b2f-ba39-fbfb46d7b947' class='xr-var-data-in' type='checkbox'><label for='data-d2ecde82-be76-4b2f-ba39-fbfb46d7b947' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([[[ 3.83949782e-01, -4.24922581e-01, -7.52450072e-01,\n",
-       "          1.21234248e+00, -9.22548373e-01,  1.68237742e-01,\n",
-       "          1.99966773e+00, -3.26202020e-01,  6.07073687e-01,\n",
-       "          1.02603162e+00],\n",
-       "        [ 5.99675466e-02, -6.68527204e-02,  1.53698961e+00,\n",
-       "          7.30218204e-01,  9.35546946e-01,  3.33506001e-01,\n",
-       "         -2.87332730e+00, -9.29787572e-01, -1.17752033e+00,\n",
-       "          1.06869258e+00],\n",
-       "        [-4.07316192e-01,  5.26275934e-01,  1.43789696e+00,\n",
-       "          3.38223434e-01,  8.74268720e-01, -1.12870206e+00,\n",
-       "         -1.58333161e-01,  2.40482598e-01,  6.66687355e-01,\n",
-       "         -1.51603941e+00],\n",
-       "        [-1.06800357e+00,  2.41715171e+00,  1.04449716e-01,\n",
-       "         -2.25170807e+00, -1.05611451e-01, -2.02149474e+00,\n",
-       "         -1.45532700e+00, -3.88297474e-01, -1.97361060e+00,\n",
-       "         -1.56830162e+00],\n",
-       "        [ 1.76291146e+00, -1.21929963e+00,  5.54212069e-01,\n",
-       "          2.22470001e-01, -8.45363510e-01, -1.96532800e+00,\n",
-       "         -1.69154874e+00, -3.15075022e-01, -6.70247876e-01,\n",
-       "         -1.96827011e+00],\n",
-       "        [-1.10074526e+00, -3.28861345e-02, -1.54599206e-01,\n",
-       "         -5.87159767e-01, -5.68027773e-01, -3.39073687e+00,\n",
-       "          8.23872261e-01, -1.74575654e+00,  2.07647066e+00,\n",
-       "          5.67036800e-01],\n",
-       "        [ 4.56109764e-01, -7.52974728e-02,  3.68002622e-01,\n",
-       "          4.22306025e-01,  1.42035086e-01, -4.71555345e-01,\n",
-       "         -1.40617288e-02,  2.13677626e-02, -1.24304685e+00,\n",
-       "          6.89790239e-01],\n",
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-       "          9.44161941e-02],\n",
-       "        [ 1.04431131e+00,  2.05158538e+00,  1.77792911e-01,\n",
-       "         -1.15639801e+00, -1.16879575e+00, -1.50927009e-01,\n",
-       "         -9.82331555e-02,  2.07021953e+00,  1.25097281e+00,\n",
-       "         -5.56746559e-01],\n",
-       "        [ 1.40699915e+00, -6.21317077e-01, -1.21274438e+00,\n",
-       "         -3.17789976e-01, -6.05525347e-01, -1.66554119e+00,\n",
-       "         -2.24207857e-01,  2.86311630e-01,  1.62249173e+00,\n",
-       "         -3.15283909e-01],\n",
-       "        [-2.22061713e-01,  8.03942643e-01,  1.97668919e-01,\n",
-       "         -8.55866643e-01,  9.88830867e-02, -1.70861777e+00,\n",
-       "         -3.67899753e-01, -7.61882907e-01, -9.87186951e-01,\n",
-       "          8.70674901e-01],\n",
-       "        [ 5.04680050e-01,  9.08143447e-01,  3.49483543e-01,\n",
-       "          5.26629508e-01, -1.52242313e-01, -2.51796334e-01,\n",
-       "         -1.88596631e-01,  8.97122390e-02, -1.93901287e+00,\n",
-       "          4.62145013e-01],\n",
-       "        [-1.08750323e+00,  6.96678417e-01,  1.67642553e+00,\n",
-       "          9.51789049e-01,  6.18442059e-01,  4.20069032e-01,\n",
-       "         -8.84441493e-02, -5.02794661e-01,  7.34871358e-01,\n",
-       "         -3.70167361e-01],\n",
-       "        [ 1.02534311e-02, -9.24318196e-01, -5.51238983e-01,\n",
-       "          4.41497064e-01, -1.45156214e+00, -1.44392990e-01,\n",
-       "          1.23557562e+00, -3.63257473e-01, -1.06689503e+00,\n",
-       "         -7.69817492e-01],\n",
-       "        [ 1.02433650e+00, -7.36088937e-01,  1.02813190e+00,\n",
-       "         -8.88377348e-01, -2.65042624e-01,  1.75908034e+00,\n",
-       "          1.17759944e+00, -2.52734331e-01,  1.07444102e+00,\n",
-       "         -1.24722114e+00],\n",
-       "        [ 1.01478705e+00, -1.24395612e+00,  4.35237720e-01,\n",
-       "         -1.70794994e-01,  8.02030212e-01, -1.72495422e+00,\n",
-       "          1.26133253e+00,  8.94681186e-01, -1.40398825e+00,\n",
-       "         -1.20863522e+00],\n",
-       "        [-8.17745312e-02,  1.08892670e+00, -1.20220921e+00,\n",
-       "         -7.66254557e-01,  4.67619816e-01,  2.92867238e-01,\n",
-       "          3.34066366e-01,  2.72157563e-01,  6.24135785e-01,\n",
-       "         -7.54899145e-01],\n",
-       "        [ 1.45617099e+00,  1.66893844e+00, -5.58569215e-01,\n",
-       "         -1.84745386e+00, -3.97209120e-01, -7.59556720e-01,\n",
-       "         -4.16718680e-01, -5.85617043e-01, -1.92122540e-01,\n",
-       "          3.07005197e-01],\n",
-       "        [-4.16143417e-01,  3.00432408e-01, -2.15786999e-01,\n",
-       "         -6.71918241e-01,  8.03132199e-01,  1.12905263e+00,\n",
-       "         -4.78372378e-01,  2.27117346e-01, -8.37517704e-01,\n",
-       "          3.16726497e-01],\n",
-       "        [-2.28093936e+00, -4.81176088e-01, -7.76808530e-01,\n",
-       "         -5.80287723e-01,  9.54935457e-01, -7.01360347e-01,\n",
-       "          4.48368466e-01, -1.51902492e-01,  2.74335441e-01,\n",
-       "          3.39502195e-01],\n",
-       "        [ 1.46230790e+00,  2.30933699e+00, -1.52025190e+00,\n",
-       "          4.17092247e-01,  1.94095135e+00, -1.94548496e+00,\n",
-       "          1.27732457e+00,  6.06274737e-01,  1.30848585e+00,\n",
-       "         -9.14296391e-01],\n",
-       "        [-1.42496277e-01,  5.56228852e-01,  1.59415730e+00,\n",
-       "          6.31585480e-01,  7.98419866e-01,  2.16748128e-01,\n",
-       "         -2.59198110e-01, -6.94802408e-03,  1.56305458e+00,\n",
-       "         -3.83728709e-01],\n",
-       "        [-1.27225106e+00,  5.12705111e-01, -2.18685041e-03,\n",
-       "          3.08420413e-01, -8.56867924e-01, -2.29866378e+00,\n",
-       "          1.87798641e-01,  2.04782145e-02, -4.42340787e-01,\n",
-       "          1.94318228e+00],\n",
-       "        [-1.60618804e-01,  1.13947332e+00,  2.04588233e-01,\n",
-       "         -4.97407503e-01,  3.53797043e-02, -6.91517388e-01,\n",
-       "         -1.60955398e+00,  8.54010939e-01,  1.94273349e+00,\n",
-       "          1.17465363e+00],\n",
-       "        [-8.24845092e-01,  6.23131743e-01,  2.05627626e+00,\n",
-       "         -9.10928865e-02,  1.56120445e+00,  8.84370639e-01,\n",
-       "         -8.19393246e-01, -8.01984250e-01, -9.86370368e-02,\n",
-       "          1.08884622e+00],\n",
-       "        [-1.35943099e+00, -1.17173264e-01, -1.76507193e+00,\n",
-       "         -9.22582492e-01,  7.32594020e-01, -1.25723253e-01,\n",
-       "         -1.18067363e+00,  9.87389196e-01, -8.38230045e-01,\n",
-       "         -1.49159808e+00],\n",
-       "        [-5.16406769e-01,  3.13915725e-01, -8.54823809e-01,\n",
-       "         -1.02470557e+00,  1.21560450e+00,  9.20955146e-01,\n",
-       "         -1.09237377e+00,  5.84158500e-01, -1.16055340e+00,\n",
-       "          8.37327161e-02],\n",
-       "        [ 8.65162098e-01, -5.05677085e-01,  1.82949868e-01,\n",
-       "         -5.92753364e-01, -5.62332911e-01, -1.08210662e-01,\n",
-       "         -1.31862879e+00,  1.03101919e+00,  7.38045897e-02,\n",
-       "         -4.71621984e-01],\n",
-       "        [ 7.83383547e-02,  1.91456640e+00, -9.74402295e-01,\n",
-       "          1.55854320e+00,  2.59809274e+00,  7.83316418e-02,\n",
-       "         -1.40941942e+00,  1.19892060e+00, -9.31637829e-01,\n",
-       "         -3.53693428e-02],\n",
-       "        [ 7.17526486e-01, -9.69508312e-01,  3.24199919e-01,\n",
-       "         -8.95324253e-01, -1.03194979e+00, -4.32445892e-01,\n",
-       "         -4.33561500e-01,  3.21475394e-01,  3.68854551e-01,\n",
-       "          1.08531537e+00],\n",
-       "        [-4.15527077e-01, -5.16091939e-01,  3.99410114e-01,\n",
-       "          4.63791972e-02,  1.37200838e+00, -1.17613794e+00,\n",
-       "          3.54701520e-01,  9.20563172e-01,  6.19535628e-01,\n",
-       "         -2.73494371e-01],\n",
-       "        [-1.28388793e+00,  2.01759201e-01,  2.40823245e+00,\n",
-       "         -6.14183274e-01, -2.10437195e-01,  9.40762801e-01,\n",
-       "          1.00825258e+00,  1.01788415e+00, -8.42117567e-02,\n",
-       "         -3.20454626e+00],\n",
-       "        [-1.42784282e+00,  9.84805601e-01,  6.40402245e-01,\n",
-       "         -5.69869434e-01,  4.37650067e-01,  9.12624333e-01,\n",
-       "         -9.61378102e-01, -1.04562022e+00, -1.67912791e+00,\n",
-       "          3.76781052e-01],\n",
-       "        [-6.60135138e-01, -2.18287191e+00, -4.93030369e-01,\n",
-       "         -1.76235979e-01,  9.35579631e-01,  1.64793682e-01,\n",
-       "         -1.40587603e+00, -6.81806964e-01,  1.02215879e+00,\n",
-       "          4.31489160e-01],\n",
-       "        [ 1.62515156e-01,  9.15907575e-01,  1.15927657e+00,\n",
-       "         -8.10727657e-01,  2.78226054e-01,  1.42864561e-01,\n",
-       "         -8.35643232e-01,  1.64703107e-01, -1.34467718e+00,\n",
-       "         -8.68861845e-01],\n",
-       "        [-2.44030875e-01, -3.66378408e-01, -1.10882172e+00,\n",
-       "         -9.86625978e-01, -9.90647599e-01, -1.93271978e+00,\n",
-       "          3.19268525e-01,  6.24626362e-01,  4.23577939e-01,\n",
-       "         -3.05202156e-01],\n",
-       "        [-6.60997240e-01, -8.21343516e-01, -1.02020096e-01,\n",
-       "          2.31683252e-01,  4.95402344e-01, -3.08681280e-01,\n",
-       "         -9.60064049e-01,  4.74289652e-01,  4.29826030e-01,\n",
-       "         -3.02252591e-01],\n",
-       "        [ 1.32019648e+00, -1.42493591e+00,  1.00049789e+00,\n",
-       "          1.74671065e+00,  9.75798761e-01,  1.08280211e+00,\n",
-       "          1.66381266e+00,  4.79047112e-01,  1.02944596e+00,\n",
-       "          1.44188697e+00],\n",
-       "        [ 1.41356761e+00, -1.29860859e+00,  3.21765217e-01,\n",
-       "          1.37592461e+00, -2.28733972e-01,  6.07310301e-01,\n",
-       "         -9.91045263e-01, -1.13200899e-01,  1.14816888e+00,\n",
-       "         -5.85060490e-01],\n",
-       "        [ 7.87384986e-01,  1.02690164e-01,  7.30967387e-01,\n",
-       "          1.55640681e+00,  3.66062745e-01,  8.35093179e-01,\n",
-       "         -9.52345842e-01, -4.77972470e-01,  1.72310542e+00,\n",
-       "         -2.62599445e-01],\n",
-       "        [-8.01348275e-01, -4.17957485e-01, -1.30991555e+00,\n",
-       "         -2.65776168e-01, -4.23852828e-01,  7.86504260e-01,\n",
-       "         -1.30354920e-02,  1.48565581e-01, -1.14283710e-01,\n",
-       "          9.29870682e-01]]])</pre></li><li class='xr-var-item'><div class='xr-var-name'><span>c</span></div><div class='xr-var-dims'>(chain, draw, c1, c2)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>-1.969 -0.3835 ... -0.6989 -0.393</div><input id='attrs-348274be-65ec-4c81-908f-b6361ae61c99' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-348274be-65ec-4c81-908f-b6361ae61c99' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ae9826b4-4c3f-4c9a-a5c8-6a01a3bc3215' class='xr-var-data-in' type='checkbox'><label for='data-ae9826b4-4c3f-4c9a-a5c8-6a01a3bc3215' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><pre class='xr-var-data'>array([[[[-1.9685806 , -0.38345697, -1.14734465, -0.08337334],\n",
-       "         [ 0.769021  ,  1.11133546,  1.91498295, -0.46834211],\n",
-       "         [-0.23264243, -1.05010379, -2.14064243, -1.07390044]],\n",
-       "\n",
-       "        [[-0.3422121 ,  0.11486382, -0.24465889,  0.18087892],\n",
-       "         [-0.0338139 , -0.60712889,  0.07562642,  0.56905369],\n",
-       "         [-0.18189297,  1.7870949 , -1.57350046, -0.50810089]],\n",
-       "\n",
-       "        [[-0.0510513 , -0.36662106, -0.8270934 , -1.26042414],\n",
-       "         [ 0.93017305,  0.65638302,  2.30087812, -0.57078071],\n",
-       "         [-0.56215181,  1.19480847,  1.10890094, -0.87102009]],\n",
+       "       90, 91, 92, 93, 94, 95, 96, 97, 98, 99])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>b1</span></div><div class='xr-var-dims'>(b1)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4 5 6 7 8 9</div><input id='attrs-fe9884f2-5ea9-4c6c-9103-c7574d35359c' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-fe9884f2-5ea9-4c6c-9103-c7574d35359c' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-68ab2026-2116-4915-b23a-58740dfe50f8' class='xr-var-data-in' type='checkbox'><label for='data-68ab2026-2116-4915-b23a-58740dfe50f8' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>c1</span></div><div class='xr-var-dims'>(c1)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2</div><input id='attrs-9dc4cf48-0b21-404f-a5f0-54f5a6ff835e' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-9dc4cf48-0b21-404f-a5f0-54f5a6ff835e' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-a4c05224-f4b3-4c2e-9cf8-afd269b4b0a7' class='xr-var-data-in' type='checkbox'><label for='data-a4c05224-f4b3-4c2e-9cf8-afd269b4b0a7' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0, 1, 2])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>c2</span></div><div class='xr-var-dims'>(c2)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3</div><input id='attrs-5d3f7be4-98ff-4ba4-bae0-fa525897c937' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-5d3f7be4-98ff-4ba4-bae0-fa525897c937' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-627d5253-49d9-48bf-9654-741c3ca6e856' class='xr-var-data-in' type='checkbox'><label for='data-627d5253-49d9-48bf-9654-741c3ca6e856' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0, 1, 2, 3])</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-993fccae-7e0d-4001-9083-36da65dac193' class='xr-section-summary-in' type='checkbox'  checked><label for='section-993fccae-7e0d-4001-9083-36da65dac193' class='xr-section-summary' >Data variables: <span>(3)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>a</span></div><div class='xr-var-dims'>(chain, draw)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>0.1803 0.5852 ... -0.05 1.146</div><input id='attrs-78648097-cc0e-4bdf-a35c-f8c122c8cf76' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-78648097-cc0e-4bdf-a35c-f8c122c8cf76' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-ec45c999-20fb-4490-9047-2c564d4ce76c' class='xr-var-data-in' type='checkbox'><label for='data-ec45c999-20fb-4490-9047-2c564d4ce76c' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([[ 0.18025798,  0.58521032, -0.18510602,  0.29572838, -0.4678021 ,\n",
+       "         1.05480259,  1.28168388,  0.28121633,  1.28831772, -0.9405371 ,\n",
+       "        -0.01534311,  2.06181243,  0.24717768,  0.92023114, -0.20417784,\n",
+       "         0.40450326, -1.81281575,  0.32930736,  1.37936813, -1.045988  ,\n",
+       "        -1.17985161,  1.52358934,  0.81251164,  1.28913742, -0.23414291,\n",
+       "         0.02790046,  1.01011449,  0.57112459,  0.90010843,  1.45698772,\n",
+       "        -1.54781426,  0.68288115,  0.26818358,  0.27993301,  0.83487245,\n",
+       "        -0.38779835, -3.00243428, -0.83141511,  0.84487712, -0.1588264 ,\n",
+       "         0.4761695 ,  0.48862562, -0.41776401, -0.42193439,  0.45713259,\n",
+       "        -1.37347751, -0.44040984,  0.43530538, -2.11459774, -0.02085076,\n",
+       "        -1.99419785, -1.6438705 ,  0.3642352 ,  0.16277758, -1.14936101,\n",
+       "        -0.03853989,  1.17273882,  1.24492894, -0.85045339,  0.23314687,\n",
+       "        -1.06573434,  0.12197202, -0.90605231,  1.3832725 , -0.96656837,\n",
+       "         0.38713005,  1.43913237,  0.13171886, -0.41252912, -0.22330962,\n",
+       "         0.66293516,  0.49838978,  1.11763287, -0.12153436, -0.95715543,\n",
+       "         0.28567201, -1.04870722, -0.7706029 , -0.08357007, -0.97143108,\n",
+       "        -1.03133491, -0.5744688 , -0.25378889, -1.41828196,  0.15854538,\n",
+       "         0.77810164, -0.85872318, -0.95917415, -1.10980651,  0.15896798,\n",
+       "         0.95216139,  0.25552642, -0.03821542,  0.31519828,  0.60881462,\n",
+       "        -0.07113351, -0.50351016,  1.41964737, -0.05000121,  1.14579741]])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>b</span></div><div class='xr-var-dims'>(chain, draw, b1)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>0.1448 0.3689 ... 0.6358 0.3637</div><input id='attrs-7988a3b9-31a8-4bfb-be7b-5dce8c17cf7f' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-7988a3b9-31a8-4bfb-be7b-5dce8c17cf7f' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-05eb0691-314c-4fdf-8fb4-802e46a27af4' class='xr-var-data-in' type='checkbox'><label for='data-05eb0691-314c-4fdf-8fb4-802e46a27af4' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([[[ 1.44768645e-01,  3.68912141e-01, -4.41145092e-01,\n",
+       "          1.01329899e+00, -2.07608831e-01,  1.58289413e-01,\n",
+       "          1.62900724e+00,  4.81549794e-01,  7.36543747e-01,\n",
+       "         -6.19077739e-01],\n",
+       "        [-9.64115527e-01, -7.95727502e-01,  8.39260050e-01,\n",
+       "          1.85614010e-01,  5.28028388e-01, -1.01281926e+00,\n",
+       "          2.08883508e-01,  9.99168036e-01,  4.39771693e-01,\n",
+       "          2.12305143e+00],\n",
+       "        [ 3.59210211e-01,  3.40273376e-01,  2.98681466e-01,\n",
+       "         -8.43803598e-01,  2.16024571e+00, -5.77565866e-01,\n",
+       "         -1.71335609e-01, -1.19055415e-01, -5.83590579e-01,\n",
+       "         -3.93990715e-01],\n",
+       "        [ 1.34295134e-01,  1.98614920e+00, -6.64298704e-01,\n",
+       "         -9.27949544e-02,  6.89743208e-01, -8.08106338e-01,\n",
+       "          6.61251310e-01, -9.97463634e-01, -4.41736557e-01,\n",
+       "          1.72348721e-01],\n",
+       "        [-3.97988577e-01,  1.53273089e+00, -7.91212995e-01,\n",
+       "          2.24241430e+00, -1.59580390e+00, -2.15388666e+00,\n",
+       "         -8.10599091e-01,  2.64187178e+00, -4.07235896e-01,\n",
+       "         -8.90425685e-01],\n",
+       "...\n",
+       "        [ 3.07674673e-01, -1.50641692e+00,  1.73030789e+00,\n",
+       "         -1.47323923e-01, -2.16538092e-01,  1.00179747e+00,\n",
+       "         -4.65012767e-03, -8.00730253e-01,  7.95794005e-01,\n",
+       "         -1.12679215e+00],\n",
+       "        [ 1.92166661e+00,  3.11945611e-01,  8.00024301e-01,\n",
+       "          8.95247769e-01, -5.88769922e-01, -7.67819877e-01,\n",
+       "          1.28055926e+00, -4.62022641e-01,  4.09592181e-01,\n",
+       "          8.32283149e-01],\n",
+       "        [-2.05812436e-01,  9.03045539e-01,  3.40563354e-01,\n",
+       "          2.31481211e-01,  4.27513621e-01,  6.94560792e-01,\n",
+       "          4.03242602e-01, -1.91523827e+00, -2.26753819e+00,\n",
+       "          2.61259842e-01],\n",
+       "        [-6.19526267e-01,  2.65777755e-01,  3.12480251e-02,\n",
+       "         -1.16288163e+00,  1.04619214e+00,  1.53060008e-01,\n",
+       "          6.51890028e-01,  1.28364550e+00, -3.16561855e-01,\n",
+       "          2.55569983e-01],\n",
+       "        [ 3.62763197e-01, -2.32596286e-01, -1.08565195e-01,\n",
+       "         -1.02661301e+00,  2.55885867e-01, -7.11633669e-01,\n",
+       "          2.16457106e-01, -1.43406267e-01,  6.35785896e-01,\n",
+       "          3.63733284e-01]]])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>c</span></div><div class='xr-var-dims'>(chain, draw, c1, c2)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>-0.9854 1.128 ... -0.08264 -0.1264</div><input id='attrs-6159fd8f-ef6a-4d76-933f-b5c65918af80' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-6159fd8f-ef6a-4d76-933f-b5c65918af80' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-aaa1a5d2-a8dd-4734-9ed6-6fb93dd7c8f0' class='xr-var-data-in' type='checkbox'><label for='data-aaa1a5d2-a8dd-4734-9ed6-6fb93dd7c8f0' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([[[[-0.9853996 ,  1.12752293, -1.9499529 ,  0.53327689],\n",
+       "         [-1.20611327,  0.49807201,  1.69088725,  1.23112537],\n",
+       "         [-0.23287423, -1.03069988,  0.67629377,  0.01194341]],\n",
+       "\n",
+       "        [[-2.8234039 , -1.11843694, -0.62971856, -0.83978545],\n",
+       "         [ 0.7580245 ,  2.99053767,  0.7134701 ,  1.79643044],\n",
+       "         [ 1.31332094,  0.46178798, -1.05648389, -0.37917092]],\n",
+       "\n",
+       "        [[-0.06346469,  1.04674024,  0.58744707, -0.76578695],\n",
+       "         [ 0.04049516,  0.02051111,  0.99117427,  0.30782594],\n",
+       "         [ 0.49078966, -1.17610465,  0.08032067,  0.24485989]],\n",
        "\n",
        "        ...,\n",
        "\n",
-       "        [[ 0.40663338,  0.5611835 ,  0.39908726, -0.29270602],\n",
-       "         [ 0.58947034,  0.26671407, -0.57288192, -0.50354393],\n",
-       "         [ 1.51137947,  0.09171223, -0.91077266,  0.2399483 ]],\n",
+       "        [[ 0.55327319,  0.54893173, -0.82879398, -2.70989554],\n",
+       "         [ 0.38160275, -1.85099807,  0.89347682, -0.15399947],\n",
+       "         [ 1.12543953, -0.06551779, -1.4420331 ,  0.34254678]],\n",
        "\n",
-       "        [[-1.46379518, -1.87590622,  0.51953765, -0.10717415],\n",
-       "         [ 1.32766471,  0.0645871 ,  0.0359231 ,  2.3641054 ],\n",
-       "         [ 0.64254228,  0.77359929,  0.08771938,  0.93903909]],\n",
+       "        [[ 0.46316553, -0.25416657, -2.12689551, -0.74543099],\n",
+       "         [ 0.3510827 ,  1.34503713,  0.33211332, -0.00794034],\n",
+       "         [-0.62564394,  1.57612706, -0.47899028, -0.95268644]],\n",
        "\n",
-       "        [[-1.04082777,  0.17818282,  0.27089952, -1.47930329],\n",
-       "         [ 0.29680156,  0.64995149, -0.5202781 , -0.01071339],\n",
-       "         [-0.551221  , -0.40814589, -0.69886247, -0.39295165]]]])</pre></li></ul></div></li><li class='xr-section-item'><input id='section-92c500fa-5a67-4fe6-be27-b3cb9890e766' class='xr-section-summary-in' type='checkbox'  checked><label for='section-92c500fa-5a67-4fe6-be27-b3cb9890e766' class='xr-section-summary' >Attributes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>created_at :</span></dt><dd>2020-06-10T18:19:03.966946</dd><dt><span>arviz_version :</span></dt><dd>0.8.3</dd></dl></div></li></ul></div></div><br></div>\n",
+       "        [[ 0.71415433, -0.90717209, -0.34649499,  1.19899274],\n",
+       "         [-1.18767475,  0.07201166, -0.3339749 ,  0.30002289],\n",
+       "         [-0.77867416, -0.28337606, -0.08264274, -0.1263899 ]]]])</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-49e3dcef-444d-42b8-af5c-8c9c5bfde0fe' class='xr-section-summary-in' type='checkbox'  checked><label for='section-49e3dcef-444d-42b8-af5c-8c9c5bfde0fe' class='xr-section-summary' >Attributes: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>created_at :</span></dt><dd>2021-02-13T14:34:11.561406</dd><dt><span>arviz_version :</span></dt><dd>0.11.1</dd></dl></div></li></ul></div></div><br></div>\n",
        "                      </ul>\n",
        "                  </div>\n",
        "            </li>\n",
        "            \n",
        "              </ul>\n",
        "            </div>\n",
-       "            <style> /* CSS stylesheet for displaying xarray objects in jupyterlab.\n",
+       "            <style> /* CSS stylesheet for displaying InferenceData objects in jupyterlab.\n",
        " *\n",
        " */\n",
        "\n",
@@ -3528,11 +2983,29 @@
        "  --xr-background-color-row-odd: var(--jp-layout-color2, #eeeeee);\n",
        "}\n",
        "\n",
+       "html[theme=dark],\n",
+       "body.vscode-dark {\n",
+       "  --xr-font-color0: rgba(255, 255, 255, 1);\n",
+       "  --xr-font-color2: rgba(255, 255, 255, 0.54);\n",
+       "  --xr-font-color3: rgba(255, 255, 255, 0.38);\n",
+       "  --xr-border-color: #1F1F1F;\n",
+       "  --xr-disabled-color: #515151;\n",
+       "  --xr-background-color: #111111;\n",
+       "  --xr-background-color-row-even: #111111;\n",
+       "  --xr-background-color-row-odd: #313131;\n",
+       "}\n",
+       "\n",
        ".xr-wrap {\n",
+       "  display: block;\n",
        "  min-width: 300px;\n",
        "  max-width: 700px;\n",
        "}\n",
        "\n",
+       ".xr-text-repr-fallback {\n",
+       "  /* fallback to plain text repr when CSS is not injected (untrusted notebook) */\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
        ".xr-header {\n",
        "  padding-top: 6px;\n",
        "  padding-bottom: 6px;\n",
@@ -3563,6 +3036,10 @@
        "  grid-template-columns: 150px auto auto 1fr 20px 20px;\n",
        "}\n",
        "\n",
+       ".xr-sections.group-sections {\n",
+       "  grid-template-columns: auto;\n",
+       "}\n",
+       "\n",
        ".xr-section-item {\n",
        "  display: contents;\n",
        "}\n",
@@ -3855,6 +3332,808 @@
     "dataset"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## From Dataframe"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/html": [
+       "\n",
+       "            <div>\n",
+       "              <div class='xr-header'>\n",
+       "                <div class=\"xr-obj-type\">arviz.InferenceData</div>\n",
+       "              </div>\n",
+       "              <ul class=\"xr-sections group-sections\">\n",
+       "              \n",
+       "            <li class = \"xr-section-item\">\n",
+       "                  <input id=\"idata_posteriorddb1f615-8e77-4b18-b2c2-569678cd9d79\" class=\"xr-section-summary-in\" type=\"checkbox\">\n",
+       "                  <label for=\"idata_posteriorddb1f615-8e77-4b18-b2c2-569678cd9d79\" class = \"xr-section-summary\">posterior</label>\n",
+       "                  <div class=\"xr-section-inline-details\"></div>\n",
+       "                  <div class=\"xr-section-details\">\n",
+       "                      <ul id=\"xr-dataset-coord-list\" class=\"xr-var-list\">\n",
+       "                          <div style=\"padding-left:2rem;\"><div><svg style=\"position: absolute; width: 0; height: 0; overflow: hidden\">\n",
+       "<defs>\n",
+       "<symbol id=\"icon-database\" viewBox=\"0 0 32 32\">\n",
+       "<path d=\"M16 0c-8.837 0-16 2.239-16 5v4c0 2.761 7.163 5 16 5s16-2.239 16-5v-4c0-2.761-7.163-5-16-5z\"></path>\n",
+       "<path d=\"M16 17c-8.837 0-16-2.239-16-5v6c0 2.761 7.163 5 16 5s16-2.239 16-5v-6c0 2.761-7.163 5-16 5z\"></path>\n",
+       "<path d=\"M16 26c-8.837 0-16-2.239-16-5v6c0 2.761 7.163 5 16 5s16-2.239 16-5v-6c0 2.761-7.163 5-16 5z\"></path>\n",
+       "</symbol>\n",
+       "<symbol id=\"icon-file-text2\" viewBox=\"0 0 32 32\">\n",
+       "<path d=\"M28.681 7.159c-0.694-0.947-1.662-2.053-2.724-3.116s-2.169-2.030-3.116-2.724c-1.612-1.182-2.393-1.319-2.841-1.319h-15.5c-1.378 0-2.5 1.121-2.5 2.5v27c0 1.378 1.122 2.5 2.5 2.5h23c1.378 0 2.5-1.122 2.5-2.5v-19.5c0-0.448-0.137-1.23-1.319-2.841zM24.543 5.457c0.959 0.959 1.712 1.825 2.268 2.543h-4.811v-4.811c0.718 0.556 1.584 1.309 2.543 2.268zM28 29.5c0 0.271-0.229 0.5-0.5 0.5h-23c-0.271 0-0.5-0.229-0.5-0.5v-27c0-0.271 0.229-0.5 0.5-0.5 0 0 15.499-0 15.5 0v7c0 0.552 0.448 1 1 1h7v19.5z\"></path>\n",
+       "<path d=\"M23 26h-14c-0.552 0-1-0.448-1-1s0.448-1 1-1h14c0.552 0 1 0.448 1 1s-0.448 1-1 1z\"></path>\n",
+       "<path d=\"M23 22h-14c-0.552 0-1-0.448-1-1s0.448-1 1-1h14c0.552 0 1 0.448 1 1s-0.448 1-1 1z\"></path>\n",
+       "<path d=\"M23 18h-14c-0.552 0-1-0.448-1-1s0.448-1 1-1h14c0.552 0 1 0.448 1 1s-0.448 1-1 1z\"></path>\n",
+       "</symbol>\n",
+       "</defs>\n",
+       "</svg>\n",
+       "<style>/* CSS stylesheet for displaying xarray objects in jupyterlab.\n",
+       " *\n",
+       " */\n",
+       "\n",
+       ":root {\n",
+       "  --xr-font-color0: var(--jp-content-font-color0, rgba(0, 0, 0, 1));\n",
+       "  --xr-font-color2: var(--jp-content-font-color2, rgba(0, 0, 0, 0.54));\n",
+       "  --xr-font-color3: var(--jp-content-font-color3, rgba(0, 0, 0, 0.38));\n",
+       "  --xr-border-color: var(--jp-border-color2, #e0e0e0);\n",
+       "  --xr-disabled-color: var(--jp-layout-color3, #bdbdbd);\n",
+       "  --xr-background-color: var(--jp-layout-color0, white);\n",
+       "  --xr-background-color-row-even: var(--jp-layout-color1, white);\n",
+       "  --xr-background-color-row-odd: var(--jp-layout-color2, #eeeeee);\n",
+       "}\n",
+       "\n",
+       "html[theme=dark],\n",
+       "body.vscode-dark {\n",
+       "  --xr-font-color0: rgba(255, 255, 255, 1);\n",
+       "  --xr-font-color2: rgba(255, 255, 255, 0.54);\n",
+       "  --xr-font-color3: rgba(255, 255, 255, 0.38);\n",
+       "  --xr-border-color: #1F1F1F;\n",
+       "  --xr-disabled-color: #515151;\n",
+       "  --xr-background-color: #111111;\n",
+       "  --xr-background-color-row-even: #111111;\n",
+       "  --xr-background-color-row-odd: #313131;\n",
+       "}\n",
+       "\n",
+       ".xr-wrap {\n",
+       "  display: block;\n",
+       "  min-width: 300px;\n",
+       "  max-width: 700px;\n",
+       "}\n",
+       "\n",
+       ".xr-text-repr-fallback {\n",
+       "  /* fallback to plain text repr when CSS is not injected (untrusted notebook) */\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
+       ".xr-header {\n",
+       "  padding-top: 6px;\n",
+       "  padding-bottom: 6px;\n",
+       "  margin-bottom: 4px;\n",
+       "  border-bottom: solid 1px var(--xr-border-color);\n",
+       "}\n",
+       "\n",
+       ".xr-header > div,\n",
+       ".xr-header > ul {\n",
+       "  display: inline;\n",
+       "  margin-top: 0;\n",
+       "  margin-bottom: 0;\n",
+       "}\n",
+       "\n",
+       ".xr-obj-type,\n",
+       ".xr-array-name {\n",
+       "  margin-left: 2px;\n",
+       "  margin-right: 10px;\n",
+       "}\n",
+       "\n",
+       ".xr-obj-type {\n",
+       "  color: var(--xr-font-color2);\n",
+       "}\n",
+       "\n",
+       ".xr-sections {\n",
+       "  padding-left: 0 !important;\n",
+       "  display: grid;\n",
+       "  grid-template-columns: 150px auto auto 1fr 20px 20px;\n",
+       "}\n",
+       "\n",
+       ".xr-section-item {\n",
+       "  display: contents;\n",
+       "}\n",
+       "\n",
+       ".xr-section-item input {\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
+       ".xr-section-item input + label {\n",
+       "  color: var(--xr-disabled-color);\n",
+       "}\n",
+       "\n",
+       ".xr-section-item input:enabled + label {\n",
+       "  cursor: pointer;\n",
+       "  color: var(--xr-font-color2);\n",
+       "}\n",
+       "\n",
+       ".xr-section-item input:enabled + label:hover {\n",
+       "  color: var(--xr-font-color0);\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary {\n",
+       "  grid-column: 1;\n",
+       "  color: var(--xr-font-color2);\n",
+       "  font-weight: 500;\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary > span {\n",
+       "  display: inline-block;\n",
+       "  padding-left: 0.5em;\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in:disabled + label {\n",
+       "  color: var(--xr-font-color2);\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in + label:before {\n",
+       "  display: inline-block;\n",
+       "  content: '►';\n",
+       "  font-size: 11px;\n",
+       "  width: 15px;\n",
+       "  text-align: center;\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in:disabled + label:before {\n",
+       "  color: var(--xr-disabled-color);\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in:checked + label:before {\n",
+       "  content: '▼';\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in:checked + label > span {\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary,\n",
+       ".xr-section-inline-details {\n",
+       "  padding-top: 4px;\n",
+       "  padding-bottom: 4px;\n",
+       "}\n",
+       "\n",
+       ".xr-section-inline-details {\n",
+       "  grid-column: 2 / -1;\n",
+       "}\n",
+       "\n",
+       ".xr-section-details {\n",
+       "  display: none;\n",
+       "  grid-column: 1 / -1;\n",
+       "  margin-bottom: 5px;\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in:checked ~ .xr-section-details {\n",
+       "  display: contents;\n",
+       "}\n",
+       "\n",
+       ".xr-array-wrap {\n",
+       "  grid-column: 1 / -1;\n",
+       "  display: grid;\n",
+       "  grid-template-columns: 20px auto;\n",
+       "}\n",
+       "\n",
+       ".xr-array-wrap > label {\n",
+       "  grid-column: 1;\n",
+       "  vertical-align: top;\n",
+       "}\n",
+       "\n",
+       ".xr-preview {\n",
+       "  color: var(--xr-font-color3);\n",
+       "}\n",
+       "\n",
+       ".xr-array-preview,\n",
+       ".xr-array-data {\n",
+       "  padding: 0 5px !important;\n",
+       "  grid-column: 2;\n",
+       "}\n",
+       "\n",
+       ".xr-array-data,\n",
+       ".xr-array-in:checked ~ .xr-array-preview {\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
+       ".xr-array-in:checked ~ .xr-array-data,\n",
+       ".xr-array-preview {\n",
+       "  display: inline-block;\n",
+       "}\n",
+       "\n",
+       ".xr-dim-list {\n",
+       "  display: inline-block !important;\n",
+       "  list-style: none;\n",
+       "  padding: 0 !important;\n",
+       "  margin: 0;\n",
+       "}\n",
+       "\n",
+       ".xr-dim-list li {\n",
+       "  display: inline-block;\n",
+       "  padding: 0;\n",
+       "  margin: 0;\n",
+       "}\n",
+       "\n",
+       ".xr-dim-list:before {\n",
+       "  content: '(';\n",
+       "}\n",
+       "\n",
+       ".xr-dim-list:after {\n",
+       "  content: ')';\n",
+       "}\n",
+       "\n",
+       ".xr-dim-list li:not(:last-child):after {\n",
+       "  content: ',';\n",
+       "  padding-right: 5px;\n",
+       "}\n",
+       "\n",
+       ".xr-has-index {\n",
+       "  font-weight: bold;\n",
+       "}\n",
+       "\n",
+       ".xr-var-list,\n",
+       ".xr-var-item {\n",
+       "  display: contents;\n",
+       "}\n",
+       "\n",
+       ".xr-var-item > div,\n",
+       ".xr-var-item label,\n",
+       ".xr-var-item > .xr-var-name span {\n",
+       "  background-color: var(--xr-background-color-row-even);\n",
+       "  margin-bottom: 0;\n",
+       "}\n",
+       "\n",
+       ".xr-var-item > .xr-var-name:hover span {\n",
+       "  padding-right: 5px;\n",
+       "}\n",
+       "\n",
+       ".xr-var-list > li:nth-child(odd) > div,\n",
+       ".xr-var-list > li:nth-child(odd) > label,\n",
+       ".xr-var-list > li:nth-child(odd) > .xr-var-name span {\n",
+       "  background-color: var(--xr-background-color-row-odd);\n",
+       "}\n",
+       "\n",
+       ".xr-var-name {\n",
+       "  grid-column: 1;\n",
+       "}\n",
+       "\n",
+       ".xr-var-dims {\n",
+       "  grid-column: 2;\n",
+       "}\n",
+       "\n",
+       ".xr-var-dtype {\n",
+       "  grid-column: 3;\n",
+       "  text-align: right;\n",
+       "  color: var(--xr-font-color2);\n",
+       "}\n",
+       "\n",
+       ".xr-var-preview {\n",
+       "  grid-column: 4;\n",
+       "}\n",
+       "\n",
+       ".xr-var-name,\n",
+       ".xr-var-dims,\n",
+       ".xr-var-dtype,\n",
+       ".xr-preview,\n",
+       ".xr-attrs dt {\n",
+       "  white-space: nowrap;\n",
+       "  overflow: hidden;\n",
+       "  text-overflow: ellipsis;\n",
+       "  padding-right: 10px;\n",
+       "}\n",
+       "\n",
+       ".xr-var-name:hover,\n",
+       ".xr-var-dims:hover,\n",
+       ".xr-var-dtype:hover,\n",
+       ".xr-attrs dt:hover {\n",
+       "  overflow: visible;\n",
+       "  width: auto;\n",
+       "  z-index: 1;\n",
+       "}\n",
+       "\n",
+       ".xr-var-attrs,\n",
+       ".xr-var-data {\n",
+       "  display: none;\n",
+       "  background-color: var(--xr-background-color) !important;\n",
+       "  padding-bottom: 5px !important;\n",
+       "}\n",
+       "\n",
+       ".xr-var-attrs-in:checked ~ .xr-var-attrs,\n",
+       ".xr-var-data-in:checked ~ .xr-var-data {\n",
+       "  display: block;\n",
+       "}\n",
+       "\n",
+       ".xr-var-data > table {\n",
+       "  float: right;\n",
+       "}\n",
+       "\n",
+       ".xr-var-name span,\n",
+       ".xr-var-data,\n",
+       ".xr-attrs {\n",
+       "  padding-left: 25px !important;\n",
+       "}\n",
+       "\n",
+       ".xr-attrs,\n",
+       ".xr-var-attrs,\n",
+       ".xr-var-data {\n",
+       "  grid-column: 1 / -1;\n",
+       "}\n",
+       "\n",
+       "dl.xr-attrs {\n",
+       "  padding: 0;\n",
+       "  margin: 0;\n",
+       "  display: grid;\n",
+       "  grid-template-columns: 125px auto;\n",
+       "}\n",
+       "\n",
+       ".xr-attrs dt,\n",
+       ".xr-attrs dd {\n",
+       "  padding: 0;\n",
+       "  margin: 0;\n",
+       "  float: left;\n",
+       "  padding-right: 10px;\n",
+       "  width: auto;\n",
+       "}\n",
+       "\n",
+       ".xr-attrs dt {\n",
+       "  font-weight: normal;\n",
+       "  grid-column: 1;\n",
+       "}\n",
+       "\n",
+       ".xr-attrs dt:hover span {\n",
+       "  display: inline-block;\n",
+       "  background: var(--xr-background-color);\n",
+       "  padding-right: 10px;\n",
+       "}\n",
+       "\n",
+       ".xr-attrs dd {\n",
+       "  grid-column: 2;\n",
+       "  white-space: pre-wrap;\n",
+       "  word-break: break-all;\n",
+       "}\n",
+       "\n",
+       ".xr-icon-database,\n",
+       ".xr-icon-file-text2 {\n",
+       "  display: inline-block;\n",
+       "  vertical-align: middle;\n",
+       "  width: 1em;\n",
+       "  height: 1.5em !important;\n",
+       "  stroke-width: 0;\n",
+       "  stroke: currentColor;\n",
+       "  fill: currentColor;\n",
+       "}\n",
+       "</style><pre class='xr-text-repr-fallback'>&lt;xarray.Dataset&gt;\n",
+       "Dimensions:  (chain: 1, draw: 100)\n",
+       "Coordinates:\n",
+       "  * chain    (chain) int64 0\n",
+       "  * draw     (draw) int64 0 1 2 3 4 5 6 7 8 9 ... 90 91 92 93 94 95 96 97 98 99\n",
+       "Data variables:\n",
+       "    a        (chain, draw) float64 0.174 0.5209 0.7807 ... 0.3265 0.7712 0.7085\n",
+       "    b        (chain, draw) float64 0.2623 0.7124 0.4061 ... 0.8447 0.7347 0.2066</pre><div class='xr-wrap' hidden><div class='xr-header'><div class='xr-obj-type'>xarray.Dataset</div></div><ul class='xr-sections'><li class='xr-section-item'><input id='section-30e85830-c355-4ca0-b60c-07e50adcf2ab' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-30e85830-c355-4ca0-b60c-07e50adcf2ab' class='xr-section-summary'  title='Expand/collapse section'>Dimensions:</label><div class='xr-section-inline-details'><ul class='xr-dim-list'><li><span class='xr-has-index'>chain</span>: 1</li><li><span class='xr-has-index'>draw</span>: 100</li></ul></div><div class='xr-section-details'></div></li><li class='xr-section-item'><input id='section-f4dc92c6-e442-4838-969d-87a8c6f23f19' class='xr-section-summary-in' type='checkbox'  checked><label for='section-f4dc92c6-e442-4838-969d-87a8c6f23f19' class='xr-section-summary' >Coordinates: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>chain</span></div><div class='xr-var-dims'>(chain)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0</div><input id='attrs-27ad571f-7b21-40ec-99b8-8429f23750a5' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-27ad571f-7b21-40ec-99b8-8429f23750a5' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-f2705a3f-e572-4dd1-a71c-a82fcdcfb01e' class='xr-var-data-in' type='checkbox'><label for='data-f2705a3f-e572-4dd1-a71c-a82fcdcfb01e' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([0])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span class='xr-has-index'>draw</span></div><div class='xr-var-dims'>(draw)</div><div class='xr-var-dtype'>int64</div><div class='xr-var-preview xr-preview'>0 1 2 3 4 5 6 ... 94 95 96 97 98 99</div><input id='attrs-163769a3-7f4b-464d-974f-dc9584e26c72' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-163769a3-7f4b-464d-974f-dc9584e26c72' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-e0403c5c-35d9-4ed4-8e34-077ef263f987' class='xr-var-data-in' type='checkbox'><label for='data-e0403c5c-35d9-4ed4-8e34-077ef263f987' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([ 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17,\n",
+       "       18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,\n",
+       "       36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53,\n",
+       "       54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71,\n",
+       "       72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89,\n",
+       "       90, 91, 92, 93, 94, 95, 96, 97, 98, 99])</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-01852a9e-3c4b-4f56-87d6-435270321340' class='xr-section-summary-in' type='checkbox'  checked><label for='section-01852a9e-3c4b-4f56-87d6-435270321340' class='xr-section-summary' >Data variables: <span>(2)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'><li class='xr-var-item'><div class='xr-var-name'><span>a</span></div><div class='xr-var-dims'>(chain, draw)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>0.174 0.5209 ... 0.7712 0.7085</div><input id='attrs-ae6fa7af-8fcf-4090-a6e9-df84dd96298f' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-ae6fa7af-8fcf-4090-a6e9-df84dd96298f' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-270f6cb5-00ab-470f-90e6-014126d8aed9' class='xr-var-data-in' type='checkbox'><label for='data-270f6cb5-00ab-470f-90e6-014126d8aed9' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([[0.17399969, 0.5208888 , 0.78073958, 0.81270859, 0.8326313 ,\n",
+       "        0.69481359, 0.4527345 , 0.04006563, 0.77150224, 0.16863518,\n",
+       "        0.68034228, 0.86157851, 0.96612157, 0.69838848, 0.7405653 ,\n",
+       "        0.40183901, 0.93158215, 0.57381034, 0.03965956, 0.24734419,\n",
+       "        0.29724078, 0.9013152 , 0.57675347, 0.40654378, 0.69854638,\n",
+       "        0.09837131, 0.21214115, 0.1279704 , 0.55363704, 0.12164797,\n",
+       "        0.65484205, 0.49855299, 0.582182  , 0.40784308, 0.35231303,\n",
+       "        0.5077159 , 0.75960323, 0.01040058, 0.09464055, 0.23224409,\n",
+       "        0.20540761, 0.92500228, 0.68019656, 0.17963035, 0.31480531,\n",
+       "        0.192919  , 0.29010568, 0.27310427, 0.51541579, 0.75374609,\n",
+       "        0.44719811, 0.47072294, 0.94771935, 0.60403158, 0.27252951,\n",
+       "        0.54313015, 0.73418615, 0.61183258, 0.58393097, 0.75639231,\n",
+       "        0.87383449, 0.28687463, 0.57651506, 0.99342533, 0.30465784,\n",
+       "        0.09122743, 0.64509912, 0.16049284, 0.56583453, 0.57754649,\n",
+       "        0.66636619, 0.84445723, 0.79335418, 0.60991439, 0.26558104,\n",
+       "        0.5107463 , 0.33189211, 0.0483592 , 0.01859405, 0.98429866,\n",
+       "        0.90619961, 0.25960695, 0.94647809, 0.09666915, 0.41470572,\n",
+       "        0.2318206 , 0.84605472, 0.04214555, 0.44629552, 0.0779919 ,\n",
+       "        0.33989361, 0.55105841, 0.11240351, 0.32139337, 0.60258537,\n",
+       "        0.65662102, 0.92479269, 0.32653733, 0.77124998, 0.70845848]])</pre></div></li><li class='xr-var-item'><div class='xr-var-name'><span>b</span></div><div class='xr-var-dims'>(chain, draw)</div><div class='xr-var-dtype'>float64</div><div class='xr-var-preview xr-preview'>0.2623 0.7124 ... 0.7347 0.2066</div><input id='attrs-5b025aa8-a566-4895-8a01-b5c6c1ed3fb9' class='xr-var-attrs-in' type='checkbox' disabled><label for='attrs-5b025aa8-a566-4895-8a01-b5c6c1ed3fb9' title='Show/Hide attributes'><svg class='icon xr-icon-file-text2'><use xlink:href='#icon-file-text2'></use></svg></label><input id='data-73de9635-b2ce-42fb-9106-81e50f423f2a' class='xr-var-data-in' type='checkbox'><label for='data-73de9635-b2ce-42fb-9106-81e50f423f2a' title='Show/Hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-var-attrs'><dl class='xr-attrs'></dl></div><div class='xr-var-data'><pre>array([[0.26233205, 0.71237734, 0.40614189, 0.157799  , 0.30508373,\n",
+       "        0.43105906, 0.70338858, 0.9934347 , 0.62548769, 0.573906  ,\n",
+       "        0.18520596, 0.0185891 , 0.51231002, 0.34795437, 0.78205858,\n",
+       "        0.64245918, 0.92387104, 0.55519649, 0.14265756, 0.10061876,\n",
+       "        0.57597563, 0.26250029, 0.86924449, 0.49315196, 0.49264495,\n",
+       "        0.11063183, 0.31925675, 0.65678517, 0.21526201, 0.87798507,\n",
+       "        0.55008982, 0.84317132, 0.46329765, 0.82825291, 0.81930421,\n",
+       "        0.54645579, 0.32158564, 0.03518231, 0.53148206, 0.56233558,\n",
+       "        0.54699573, 0.57645566, 0.82334312, 0.5028602 , 0.65316495,\n",
+       "        0.81334273, 0.19176257, 0.00114957, 0.52653155, 0.7395968 ,\n",
+       "        0.44507712, 0.80512889, 0.65411647, 0.1615548 , 0.61605705,\n",
+       "        0.06003412, 0.73053819, 0.6909904 , 0.62895864, 0.84121641,\n",
+       "        0.75035995, 0.30656108, 0.18868098, 0.32532067, 0.3747053 ,\n",
+       "        0.25471167, 0.6967188 , 0.30872236, 0.39623998, 0.45088483,\n",
+       "        0.69392015, 0.3753773 , 0.54683931, 0.46712367, 0.69873646,\n",
+       "        0.96662166, 0.59242308, 0.69475848, 0.76610687, 0.6491353 ,\n",
+       "        0.05237508, 0.17393994, 0.77190906, 0.67008818, 0.98883783,\n",
+       "        0.83755151, 0.72336427, 0.84498439, 0.43565136, 0.89425368,\n",
+       "        0.65094689, 0.98856566, 0.0738281 , 0.40562204, 0.98279899,\n",
+       "        0.10461026, 0.56767586, 0.84467041, 0.73472178, 0.20655504]])</pre></div></li></ul></div></li><li class='xr-section-item'><input id='section-62fec5cc-9fc6-4ab4-a7d7-c457ffde44a7' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-62fec5cc-9fc6-4ab4-a7d7-c457ffde44a7' class='xr-section-summary'  title='Expand/collapse section'>Attributes: <span>(0)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'></dl></div></li></ul></div></div><br></div>\n",
+       "                      </ul>\n",
+       "                  </div>\n",
+       "            </li>\n",
+       "            \n",
+       "              </ul>\n",
+       "            </div>\n",
+       "            <style> /* CSS stylesheet for displaying InferenceData objects in jupyterlab.\n",
+       " *\n",
+       " */\n",
+       "\n",
+       ":root {\n",
+       "  --xr-font-color0: var(--jp-content-font-color0, rgba(0, 0, 0, 1));\n",
+       "  --xr-font-color2: var(--jp-content-font-color2, rgba(0, 0, 0, 0.54));\n",
+       "  --xr-font-color3: var(--jp-content-font-color3, rgba(0, 0, 0, 0.38));\n",
+       "  --xr-border-color: var(--jp-border-color2, #e0e0e0);\n",
+       "  --xr-disabled-color: var(--jp-layout-color3, #bdbdbd);\n",
+       "  --xr-background-color: var(--jp-layout-color0, white);\n",
+       "  --xr-background-color-row-even: var(--jp-layout-color1, white);\n",
+       "  --xr-background-color-row-odd: var(--jp-layout-color2, #eeeeee);\n",
+       "}\n",
+       "\n",
+       "html[theme=dark],\n",
+       "body.vscode-dark {\n",
+       "  --xr-font-color0: rgba(255, 255, 255, 1);\n",
+       "  --xr-font-color2: rgba(255, 255, 255, 0.54);\n",
+       "  --xr-font-color3: rgba(255, 255, 255, 0.38);\n",
+       "  --xr-border-color: #1F1F1F;\n",
+       "  --xr-disabled-color: #515151;\n",
+       "  --xr-background-color: #111111;\n",
+       "  --xr-background-color-row-even: #111111;\n",
+       "  --xr-background-color-row-odd: #313131;\n",
+       "}\n",
+       "\n",
+       ".xr-wrap {\n",
+       "  display: block;\n",
+       "  min-width: 300px;\n",
+       "  max-width: 700px;\n",
+       "}\n",
+       "\n",
+       ".xr-text-repr-fallback {\n",
+       "  /* fallback to plain text repr when CSS is not injected (untrusted notebook) */\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
+       ".xr-header {\n",
+       "  padding-top: 6px;\n",
+       "  padding-bottom: 6px;\n",
+       "  margin-bottom: 4px;\n",
+       "  border-bottom: solid 1px var(--xr-border-color);\n",
+       "}\n",
+       "\n",
+       ".xr-header > div,\n",
+       ".xr-header > ul {\n",
+       "  display: inline;\n",
+       "  margin-top: 0;\n",
+       "  margin-bottom: 0;\n",
+       "}\n",
+       "\n",
+       ".xr-obj-type,\n",
+       ".xr-array-name {\n",
+       "  margin-left: 2px;\n",
+       "  margin-right: 10px;\n",
+       "}\n",
+       "\n",
+       ".xr-obj-type {\n",
+       "  color: var(--xr-font-color2);\n",
+       "}\n",
+       "\n",
+       ".xr-sections {\n",
+       "  padding-left: 0 !important;\n",
+       "  display: grid;\n",
+       "  grid-template-columns: 150px auto auto 1fr 20px 20px;\n",
+       "}\n",
+       "\n",
+       ".xr-sections.group-sections {\n",
+       "  grid-template-columns: auto;\n",
+       "}\n",
+       "\n",
+       ".xr-section-item {\n",
+       "  display: contents;\n",
+       "}\n",
+       "\n",
+       ".xr-section-item input {\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
+       ".xr-section-item input + label {\n",
+       "  color: var(--xr-disabled-color);\n",
+       "}\n",
+       "\n",
+       ".xr-section-item input:enabled + label {\n",
+       "  cursor: pointer;\n",
+       "  color: var(--xr-font-color2);\n",
+       "}\n",
+       "\n",
+       ".xr-section-item input:enabled + label:hover {\n",
+       "  color: var(--xr-font-color0);\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary {\n",
+       "  grid-column: 1;\n",
+       "  color: var(--xr-font-color2);\n",
+       "  font-weight: 500;\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary > span {\n",
+       "  display: inline-block;\n",
+       "  padding-left: 0.5em;\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in:disabled + label {\n",
+       "  color: var(--xr-font-color2);\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in + label:before {\n",
+       "  display: inline-block;\n",
+       "  content: '►';\n",
+       "  font-size: 11px;\n",
+       "  width: 15px;\n",
+       "  text-align: center;\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in:disabled + label:before {\n",
+       "  color: var(--xr-disabled-color);\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in:checked + label:before {\n",
+       "  content: '▼';\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in:checked + label > span {\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary,\n",
+       ".xr-section-inline-details {\n",
+       "  padding-top: 4px;\n",
+       "  padding-bottom: 4px;\n",
+       "}\n",
+       "\n",
+       ".xr-section-inline-details {\n",
+       "  grid-column: 2 / -1;\n",
+       "}\n",
+       "\n",
+       ".xr-section-details {\n",
+       "  display: none;\n",
+       "  grid-column: 1 / -1;\n",
+       "  margin-bottom: 5px;\n",
+       "}\n",
+       "\n",
+       ".xr-section-summary-in:checked ~ .xr-section-details {\n",
+       "  display: contents;\n",
+       "}\n",
+       "\n",
+       ".xr-array-wrap {\n",
+       "  grid-column: 1 / -1;\n",
+       "  display: grid;\n",
+       "  grid-template-columns: 20px auto;\n",
+       "}\n",
+       "\n",
+       ".xr-array-wrap > label {\n",
+       "  grid-column: 1;\n",
+       "  vertical-align: top;\n",
+       "}\n",
+       "\n",
+       ".xr-preview {\n",
+       "  color: var(--xr-font-color3);\n",
+       "}\n",
+       "\n",
+       ".xr-array-preview,\n",
+       ".xr-array-data {\n",
+       "  padding: 0 5px !important;\n",
+       "  grid-column: 2;\n",
+       "}\n",
+       "\n",
+       ".xr-array-data,\n",
+       ".xr-array-in:checked ~ .xr-array-preview {\n",
+       "  display: none;\n",
+       "}\n",
+       "\n",
+       ".xr-array-in:checked ~ .xr-array-data,\n",
+       ".xr-array-preview {\n",
+       "  display: inline-block;\n",
+       "}\n",
+       "\n",
+       ".xr-dim-list {\n",
+       "  display: inline-block !important;\n",
+       "  list-style: none;\n",
+       "  padding: 0 !important;\n",
+       "  margin: 0;\n",
+       "}\n",
+       "\n",
+       ".xr-dim-list li {\n",
+       "  display: inline-block;\n",
+       "  padding: 0;\n",
+       "  margin: 0;\n",
+       "}\n",
+       "\n",
+       ".xr-dim-list:before {\n",
+       "  content: '(';\n",
+       "}\n",
+       "\n",
+       ".xr-dim-list:after {\n",
+       "  content: ')';\n",
+       "}\n",
+       "\n",
+       ".xr-dim-list li:not(:last-child):after {\n",
+       "  content: ',';\n",
+       "  padding-right: 5px;\n",
+       "}\n",
+       "\n",
+       ".xr-has-index {\n",
+       "  font-weight: bold;\n",
+       "}\n",
+       "\n",
+       ".xr-var-list,\n",
+       ".xr-var-item {\n",
+       "  display: contents;\n",
+       "}\n",
+       "\n",
+       ".xr-var-item > div,\n",
+       ".xr-var-item label,\n",
+       ".xr-var-item > .xr-var-name span {\n",
+       "  background-color: var(--xr-background-color-row-even);\n",
+       "  margin-bottom: 0;\n",
+       "}\n",
+       "\n",
+       ".xr-var-item > .xr-var-name:hover span {\n",
+       "  padding-right: 5px;\n",
+       "}\n",
+       "\n",
+       ".xr-var-list > li:nth-child(odd) > div,\n",
+       ".xr-var-list > li:nth-child(odd) > label,\n",
+       ".xr-var-list > li:nth-child(odd) > .xr-var-name span {\n",
+       "  background-color: var(--xr-background-color-row-odd);\n",
+       "}\n",
+       "\n",
+       ".xr-var-name {\n",
+       "  grid-column: 1;\n",
+       "}\n",
+       "\n",
+       ".xr-var-dims {\n",
+       "  grid-column: 2;\n",
+       "}\n",
+       "\n",
+       ".xr-var-dtype {\n",
+       "  grid-column: 3;\n",
+       "  text-align: right;\n",
+       "  color: var(--xr-font-color2);\n",
+       "}\n",
+       "\n",
+       ".xr-var-preview {\n",
+       "  grid-column: 4;\n",
+       "}\n",
+       "\n",
+       ".xr-var-name,\n",
+       ".xr-var-dims,\n",
+       ".xr-var-dtype,\n",
+       ".xr-preview,\n",
+       ".xr-attrs dt {\n",
+       "  white-space: nowrap;\n",
+       "  overflow: hidden;\n",
+       "  text-overflow: ellipsis;\n",
+       "  padding-right: 10px;\n",
+       "}\n",
+       "\n",
+       ".xr-var-name:hover,\n",
+       ".xr-var-dims:hover,\n",
+       ".xr-var-dtype:hover,\n",
+       ".xr-attrs dt:hover {\n",
+       "  overflow: visible;\n",
+       "  width: auto;\n",
+       "  z-index: 1;\n",
+       "}\n",
+       "\n",
+       ".xr-var-attrs,\n",
+       ".xr-var-data {\n",
+       "  display: none;\n",
+       "  background-color: var(--xr-background-color) !important;\n",
+       "  padding-bottom: 5px !important;\n",
+       "}\n",
+       "\n",
+       ".xr-var-attrs-in:checked ~ .xr-var-attrs,\n",
+       ".xr-var-data-in:checked ~ .xr-var-data {\n",
+       "  display: block;\n",
+       "}\n",
+       "\n",
+       ".xr-var-data > table {\n",
+       "  float: right;\n",
+       "}\n",
+       "\n",
+       ".xr-var-name span,\n",
+       ".xr-var-data,\n",
+       ".xr-attrs {\n",
+       "  padding-left: 25px !important;\n",
+       "}\n",
+       "\n",
+       ".xr-attrs,\n",
+       ".xr-var-attrs,\n",
+       ".xr-var-data {\n",
+       "  grid-column: 1 / -1;\n",
+       "}\n",
+       "\n",
+       "dl.xr-attrs {\n",
+       "  padding: 0;\n",
+       "  margin: 0;\n",
+       "  display: grid;\n",
+       "  grid-template-columns: 125px auto;\n",
+       "}\n",
+       "\n",
+       ".xr-attrs dt, dd {\n",
+       "  padding: 0;\n",
+       "  margin: 0;\n",
+       "  float: left;\n",
+       "  padding-right: 10px;\n",
+       "  width: auto;\n",
+       "}\n",
+       "\n",
+       ".xr-attrs dt {\n",
+       "  font-weight: normal;\n",
+       "  grid-column: 1;\n",
+       "}\n",
+       "\n",
+       ".xr-attrs dt:hover span {\n",
+       "  display: inline-block;\n",
+       "  background: var(--xr-background-color);\n",
+       "  padding-right: 10px;\n",
+       "}\n",
+       "\n",
+       ".xr-attrs dd {\n",
+       "  grid-column: 2;\n",
+       "  white-space: pre-wrap;\n",
+       "  word-break: break-all;\n",
+       "}\n",
+       "\n",
+       ".xr-icon-database,\n",
+       ".xr-icon-file-text2 {\n",
+       "  display: inline-block;\n",
+       "  vertical-align: middle;\n",
+       "  width: 1em;\n",
+       "  height: 1.5em !important;\n",
+       "  stroke-width: 0;\n",
+       "  stroke: currentColor;\n",
+       "  fill: currentColor;\n",
+       "}\n",
+       ".xr-wrap{width:700px!important;} </style>"
+      ],
+      "text/plain": [
+       "Inference data with groups:\n",
+       "\t> posterior"
+      ]
+     },
+     "execution_count": 6,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "import pandas as pd\n",
+    "import xarray as xr\n",
+    "\n",
+    "data = np.random.rand(100,2)\n",
+    "df = pd.DataFrame({'a':data[:,0], 'b':data[:,1]})\n",
+    "df[\"chain\"] = 0\n",
+    "df[\"draw\"] = np.arange(len(df), dtype=int)\n",
+    "df = df.set_index([\"chain\", \"draw\"])\n",
+    "xdata = xr.Dataset.from_dataframe(df)\n",
+    "\n",
+    "dataset = az.InferenceData(posterior=xdata)\n",
+    "dataset"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -29210,7 +29489,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.6"
+   "version": "3.8.5"
   },
   "toc": {
    "base_numbering": 1,


Test patch:
diff --git a/arviz/tests/base_tests/test_plots_matplotlib.py b/arviz/tests/base_tests/test_plots_matplotlib.py
index 0f1b349..0681ab7 100644
--- a/arviz/tests/base_tests/test_plots_matplotlib.py
+++ b/arviz/tests/base_tests/test_plots_matplotlib.py
@@ -794,6 +794,14 @@ def test_plot_ppc_bad_ax(models, fig_ax):
         plot_ppc(models.model_1, ax=ax2)
 
 
+def test_plot_legend(models):
+    axes = plot_ppc(models.model_1)
+    legend_texts = axes.get_legend().get_texts()
+    result = [i.get_text() for i in legend_texts]
+    expected = ["Posterior predictive", "Observed", "Posterior predictive mean"]
+    assert result == expected
+
+
 @pytest.mark.parametrize("var_names", (None, "mu", ["mu", "tau"]))
 def test_plot_violin(models, var_names):
     axes = plot_violin(models.model_1, var_names=var_names)