Dataset Viewer
The dataset viewer is not available for this split.
Cannot extract the features (columns) for the split 'train' of the config 'default' of the dataset.
Error code: FeaturesError
Exception: ArrowInvalid
Message: Schema at index 1 was different:
register_position: int64
basin: string
sensor_id: string
observed_on: string
method: string
reported_offset_psu: double
vs
basin: string
active_sensors: int64
physical_observations: int64
valid_observations: int64
current_calibrations: int64
mean_current_offset_psu: double
current_sensor_ids: string
Traceback: Traceback (most recent call last):
File "/src/services/worker/src/worker/job_runners/split/first_rows.py", line 244, in compute_first_rows_from_streaming_response
iterable_dataset = iterable_dataset._resolve_features()
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 4645, in _resolve_features
features = _infer_features_from_batch(self.with_format(None)._head())
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2866, in _head
return next(iter(self.iter(batch_size=n)))
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 3073, in iter
for key, pa_table in ex_iterable.iter_arrow():
~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2581, in _iter_arrow
yield from self.ex_iterable._iter_arrow()
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 589, in _iter_arrow
yield new_key, pa.Table.from_batches(chunks_buffer)
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
File "pyarrow/table.pxi", line 5012, in pyarrow.lib.Table.from_batches
File "pyarrow/error.pxi", line 155, in pyarrow.lib.pyarrow_internal_check_status
return check_status(status)
File "pyarrow/error.pxi", line 92, in pyarrow.lib.check_status
raise convert_status(status)
pyarrow.lib.ArrowInvalid: Schema at index 1 was different:
register_position: int64
basin: string
sensor_id: string
observed_on: string
method: string
reported_offset_psu: double
vs
basin: string
active_sensors: int64
physical_observations: int64
valid_observations: int64
current_calibrations: int64
mean_current_offset_psu: double
current_sensor_ids: stringNeed help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
Harbor sensor calibration ledger
Release: harbor-calibration-2026-03
Calibration window: 2026-03-01 through 2026-03-07.
The catalog has 5 sensors and 12 physical observations. 5 observations are valid, 7 are invalid, and 3 current calibrations are published.
| Basin | Current calibrations | Mean offset (PSU) | Sensor IDs |
|---|---|---|---|
| North | 1 | 0.15 | S-A |
| South | 2 | 0.05 | S-B|S-E |
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