Task: Formula-prediction-context (source dataset: pge-random)

You are given an table region extracted from a real Excel spreadsheet, which is centered around a cell called "Target Cell" (labeled as "[Target Cell]" shown in the table below). The table region below includes up to 10 rows above/below the Target Cell, and 10 columns to the left/right of the Target Cell. 

Your task is to analyze the table context surrounding the Target Cell, and predict the most likely Excel formula that should go in the Target Cell. If multiple formulas are possible, choose the most reasonable or commonly used based on context.

1. Please follow the standard formula syntax in Excel, e.g. always begins with an equal sign (=).
2. Base your predicted formula on the surrounding table context, e.g., column headers, annotations, and data values in nearby cells.
3. No explanation — just output the formula itself in a JSON format: {"formula": "your_formula_here"}.

Input Excel Snippet in Markdown format:
|    | A   | B                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | C   | D   | E                     | F   | G                     | H                        | I   | J     | K                   | L   | M   | N   | O   | P   | Q   | R   | S   | T   | U   |
|---:|:----|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:----|:----|:----------------------|:----|:----------------------|:-------------------------|:----|:------|:--------------------|:----|:----|:----|:----|:----|:----|:----|:----|:----|:----|
| 55 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     |                       |     |                       |                          |     |       | # of Hours          |     |     |     |     |     |     |     |     |     |     |
| 56 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     | Period A - Summer     |     | Period B - Winter     |                          |     |       | 2017-06-01 00:00:00 |     |     |     |     |     |     |     |     |     |     |
| 57 |     | Time Period                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |     |     | May 1 - October 31    |     | November 1 - April 30 | Applicable Days          |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 58 |     | Peak                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |     |     | Noon - 6:00 p.m.      |     | NA                    | Weekdays except Holidays |     |       | 132                 |     |     |     |     |     |     |     |     |     |     |
| 59 |     | Partial-Peak                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |     |     | 8:30 a.m. - Noon      |     | 8:30 a.m. - 9:30 p.m. | Weekdays except Holidays |     |       | 154                 |     |     |     |     |     |     |     |     |     |     |
| 60 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     | 6:00 p.m. - 9:30 p.m. |     |                       | Weekdays except Holidays |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 61 |     | Off-Peak                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |     |     | 9:30 p.m. - 1:00 a.m. |     | 9:30 p.m. - 1:00 a.m. | Weekdays except Holidays |     |       | 314                 |     |     |     |     |     |     |     |     |     |     |
| 62 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     | 5:00 a.m. - 8:30 a.m. |     | 5:00 a.m. - 8:30 a.m. | Weekdays except Holidays |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 63 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     | 5:00 a.m. - 1:00 a.m. |     | 5:00 a.m. - 1:00 a.m. | Weekends & Holidays      |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 64 |     | Super Off-Peak                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |     |     | 1:00 a.m. - 5:00 a.m. |     | 1:00 a.m. - 5:00 a.m. | All Days                 |     |       | 120                 |     |     |     |     |     |     |     |     |     |     |
| 65 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     |                       |     |                       |                          |     | Total | [Target Cell]       |     |     |     |     |     |     |     |     |     |     |
| 66 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     |                       |     |                       |                          |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 67 |     | 'NOTES:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |     |     |                       |     |                       |                          |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 68 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     |                       |     |                       |                          |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 69 |     | 2017 Holidays:  New Year's Day (1/1), Presidents' Day (2/20), Memorial Day (5/29), Independence Day (7/4), Labor Day (9/4), Veterans Day (11/11), Thanksgiving Day (11/23) and Christmas Day (12/25).  When any holiday listed above falls on Sunday, the following Monday will be recognized as a holiday. No change will be made for holidays falling on Saturday.                                                                                                                                                                                                                                                                                                                                                                                                             |     |     |                       |     |                       |                          |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 70 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     |                       |     |                       |                          |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 71 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     |                       |     |                       |                          |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 72 |     | * One of the two price sources used to derive the historical heat rate component, Platts Megawatt Daily, was discontinued as of December 1, 2014. The remaining index, CAISO Integrated Forward Market (IFM) NP-15 Data, will continue to be used as the “equivalent successor” of the former price source.  Previously, two price source substitutions were made in the annual heat rate adjustment calculation: (1) CAISO day-ahead NP-15 trading hub LMPs (TH_NP15_GEN-APND) were used in lieu of day-ahead NP-15 pricing from ICE; (2) ICE natural gas forward basis prices (for PG&E Citygate) were used in lieu of basis prices from NYMEX Clearport.  These substitutions were made due to substantial illiquidity and missing prices in the sources previously employed. |     |     |                       |     |                       |                          |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 73 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     |                       |     |                       |                          |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 74 |     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |     |     |                       |     |                       |                          |     |       |                     |     |     |     |     |     |     |     |     |     |     |
| 75 |     | - NOTE:  PG&E reserves all of its available rights and remedies to revise this posting retroactive to June 1, 2017.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |     |     |                       |     |                       |                          |     |       |                     |     |     |     |     |     |     |     |     |     |     |



min_row: 55
max_row: 75
min_col: 1
max_col: 21
target_cell_row_idx: 65
target_cell_col_idx: 11
target_cell_value: 720
formula: =SUM(K58:K64)