Task: Formula-prediction-context (source dataset: enron-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   |
|---:|:----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:--------------------|:--------------|:--------------|:----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:--------|:----|:----|:----|:----|:----|:----|:----|:----|
| 59 | I didn't hear from you this week. Hopefully all went well. I assumed that it did. I heard that you are going to see Beth this weekend.                                                                                                                          |                     |               |               |                                                                                                                                                                                                                                                                 |         |     |     |     |     |     |     |     |     |
| 60 | Jon                                                                                                                                                                                                                                                             | Date                | Day           | Time          | Run Time                                                                                                                                                                                                                                                        | Workout |     |     |     |     |     |     |     |     |
| 61 | Phase                                                                                                                                                                                                                                                           | 2001-04-24 00:00:00 | Tue           | 30.0          | Wu, Easy at 70%(150), 5x 50 meter strides (at what you think you would run a 5k. This is tough on a treadmill but if you have to do on treadmill run on the treadmill at 1 mph faster than hard part of sat workout for 1 minute at end of the workout before w |         |     |     |     |     |     |     |     |     |
| 62 | 1.0                                                                                                                                                                                                                                                             | 2001-04-25 00:00:00 | Wed           | 0.0           | Off                                                                                                                                                                                                                                                             |         |     |     |     |     |     |     |     |     |
| 63 | Week                                                                                                                                                                                                                                                            | 2001-04-26 00:00:00 | Thu           | 35.0          | 10 min wu(145), 15 minutes at .5 MPH faster than your average for Tuesday (let me know HR for this), wd(145).                                                                                                                                                   |         |     |     |     |     |     |     |     |     |
| 64 | 3.0                                                                                                                                                                                                                                                             | 2001-04-27 00:00:00 | Fri           | 0.0           | Off                                                                                                                                                                                                                                                             |         |     |     |     |     |     |     |     |     |
| 65 |                                                                                                                                                                                                                                                                 | 2001-04-28 00:00:00 | Sat           | 40.0          | 10 min wu(145),Run 20 min (get HR up to 170 jog until HR gets to 155 and go again.10 min wd(145).                                                                                                                                                               |         |     |     |     |     |     |     |     |     |
| 66 |                                                                                                                                                                                                                                                                 | 2001-04-29 00:00:00 | Sun           | 40.0          | Wu, Easy at 70%(150),  5x 50 meter strides (at what you think you would run a 5k. This is tough on a treadmill but if you have to do on treadmill run on the treadmill at 1 mph faster than hard part of sat workout for 1 minute at end of the workout before  |         |     |     |     |     |     |     |     |     |
| 67 |                                                                                                                                                                                                                                                                 | 2001-04-30 00:00:00 | Mon           | 0.0           | Off                                                                                                                                                                                                                                                             |         |     |     |     |     |     |     |     |     |
| 68 |                                                                                                                                                                                                                                                                 |                     | total minutes | run           | ratio exercise                                                                                                                                                                                                                                                  |         |     |     |     |     |     |     |     |     |
| 69 |                                                                                                                                                                                                                                                                 |                     |               | [Target Cell] |                                                                                                                                                                                                                                                                 |         |     |     |     |     |     |     |     |     |
| 70 | Jon, You were pretty consistent last week. The only concern I had was the hamstring tightness on Thursday and your heart rates are floating too high in the workouts. The rates for the workout are a cap. Since you are running on the treadmill you canhelp m |                     |               |               |                                                                                                                                                                                                                                                                 |         |     |     |     |     |     |     |     |     |
| 71 | Either the incline or the speed of the treadmill can be changed but for now I would prefer the speed. The incline is harder on your achilles tendons if you run on a continuous incline. Whatever pace you are running on the treadmill with a .5% incline is e |                     |               |               |                                                                                                                                                                                                                                                                 |         |     |     |     |     |     |     |     |     |
| 72 | From here on out I will not remind you to stretch but you should stretch before and after.                                                                                                                                                                      |                     |               |               |                                                                                                                                                                                                                                                                 |         |     |     |     |     |     |     |     |     |
| 73 | Jon                                                                                                                                                                                                                                                             | Date                | Day           | Time          | Run Time                                                                                                                                                                                                                                                        | Workout |     |     |     |     |     |     |     |     |
| 74 | Phase                                                                                                                                                                                                                                                           | 2001-04-17 00:00:00 | Tue           | 30.0          | Wu, Easy at 70%(150), Wd                                                                                                                                                                                                                                        |         |     |     |     |     |     |     |     |     |
| 75 | 1.0                                                                                                                                                                                                                                                             | 2001-04-18 00:00:00 | Wed           | 0.0           | Off                                                                                                                                                                                                                                                             |         |     |     |     |     |     |     |     |     |
| 76 | Week                                                                                                                                                                                                                                                            | 2001-04-19 00:00:00 | Thu           | 30.0          | 10 min wu(145), 10 minutes at .5 MPH faster than your average for Tuesday (let me know HR for this), wd(145).                                                                                                                                                   |         |     |     |     |     |     |     |     |     |
| 77 | 2.0                                                                                                                                                                                                                                                             | 2001-04-20 00:00:00 | Fri           | 0.0           | Off                                                                                                                                                                                                                                                             |         |     |     |     |     |     |     |     |     |
| 78 |                                                                                                                                                                                                                                                                 | 2001-04-21 00:00:00 | Sat           | 40.0          | 10 min wu(145),Run 20 min (get HR up to 170 jog until HR gets to 155 and go again.10 min wd(145).                                                                                                                                                               |         |     |     |     |     |     |     |     |     |
| 79 |                                                                                                                                                                                                                                                                 | 2001-04-22 00:00:00 | Sun           | 30.0          | Wu, Easy at 70%(150), Wd                                                                                                                                                                                                                                        |         |     |     |     |     |     |     |     |     |



min_row: 59
max_row: 79
min_col: 1
max_col: 14
target_cell_row_idx: 69
target_cell_col_idx: 4
target_cell_value: 145.0
formula: =SUM(D61:D68)