Task: Formula-prediction-context (source dataset: ti-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:
|    | I   | J   | K    | L              | M              | N              | O              | P              | Q   | R    | S              | T                            | U                            | V                             | W                             | X                            | Y                            | Z                             | AA                            | AB                           | AC                           |
|---:|:----|:----|:-----|:---------------|:---------------|:---------------|:---------------|:---------------|:----|:-----|:---------------|:-----------------------------|:-----------------------------|:------------------------------|:------------------------------|:-----------------------------|:-----------------------------|:------------------------------|:------------------------------|:-----------------------------|:-----------------------------|
|  1 |     |     | PG   | 2.0            | 2.0            | 2.0            | 2.0            | 2.0            |     | PG   | 1              | 1                            | 1                            | 1                             | 1                             | 1                            | 1                            | 1                             | 1                             | 1                            | 1                            |
|  2 |     |     | Part | 1.0            | 1.0            | 1.0            | 1.0            | 1.0            |     | Part | 1              | 1                            | 1                            | 1                             | 2                             | 2                            | 2                            | 2                             | 3                             | 3                            | 3                            |
|  3 |     |     | Fvco | 14000.0        | 12000.0        | 12000.0        | 12000.0        | 12000.0        |     | Fvco | 15000          | 15000                        | 10000                        | 10000                         | 15000                         | 15000                        | 10000                        | 10000                         | 15000                         | 15000                        | 10000                        |
|  4 |     |     | Fpd  | 200.0          | 400.0          | 200.0          | 100.0          | 50.0           |     | Fpd  | 200            | 50                           | 50                           | 200                           | 200                           | 50                           | 50                           | 200                           | 200                           | 50                           | 50                           |
|  5 |     |     | 1/f  | -128.5         | -129.0         | -128.7         | -129.2         | -129.0         |     | 1/f  | -128.5         | -126.5                       | -126.5                       | -128.5                        | -127.5                        | -127.5                       | -126.5                       | -127.5                        | -128.5                        | -128.5                       | -127                         |
|  6 |     |     | FOM  | -234.0         | -234.0         | -233.5         | -236.2         | -236.0         |     | FOM  | -236           | -236                         | -236                         | -236                          | -235                          | -235                         | -235                         | -235                          | -234                          | -235                         | -234                         |
|  7 |     |     |      |                |                |                |                |                |     |      |                |                              |                              |                               |                               |                              |                              |                               |                               |                              |                              |
|  8 |     |     |      |                |                |                |                |                |     |      |                |                              |                              |                               |                               |                              |                              |                               |                               |                              |                              |
|  9 |     |     |      |                |                |                |                |                |     |      | [Target Cell]  | Part1,Fvco=15 GHz,Fpd=50 MHz | Part1,Fvco=10 GHz,Fpd=50 MHz | Part1,Fvco=10 GHz,Fpd=200 MHz | Part2,Fvco=15 GHz,Fpd=200 MHz | Part2,Fvco=15 GHz,Fpd=50 MHz | Part2,Fvco=10 GHz,Fpd=50 MHz | Part2,Fvco=10 GHz,Fpd=200 MHz | Part3,Fvco=15 GHz,Fpd=200 MHz | Part3,Fvco=15 GHz,Fpd=50 MHz | Part3,Fvco=10 GHz,Fpd=50 MHz |
| 10 |     |     |      | -83.8521189904 | -84.6520003724 | -84.6070073221 | -85.7802352521 | -85.398580133  |     |      | -84.1965094722 | -81.9165683965               | -85.7170597309               | -88.2403954525                | -83.0391210745                | -82.2171943712               | -85.4694712612               | -86.8496837905                | -83.4472250511                | -84.4284513389               | -86.8095733667               |
| 11 |     |     |      | -84.178074965  | -84.9779563471 | -84.9329632967 | -86.1061912267 | -85.7245361077 |     |      | -84.579803378  | -82.2998623023               | -86.1003536367               | -88.5459788052                | -83.3447044271                | -82.5227777238               | -85.7750546139               | -87.1552671431                | -83.7528084037                | -84.7340346915               | -87.1151567194               |
| 12 |     |     |      | -83.7341906791 | -84.8735068563 | -84.5518004054 | -85.4154520445 | -85.1918979039 |     |      | -84.119589951  | -81.7240633645               | -85.79147205                 | -87.9408481062                | -83.4335452017                | -81.7225922207               | -85.4972623303               | -86.7818581091                | -83.0796513568                | -84.2843156657               | -86.8842123513               |
| 13 |     |     |      | -84.0654762105 | -85.2047923877 | -84.8830859368 | -85.7467375759 | -85.5231834352 |     |      | -84.5043915641 | -82.1088649776               | -86.1762736631               | -88.244477714                 | -83.7371748095                | -82.0262218286               | -85.8008919382               | -87.0854877169                | -83.3832809646                | -84.5879452735               | -87.1878419591               |
| 14 |     |     |      | -83.9150295201 | -84.9667032818 | -84.5379726192 | -85.4454499862 | -84.7523675255 |     |      | -84.0636883292 | -81.4848532525               | -85.3244112313               | -88.0857591709                | -84.0005287623                | -81.553901327                | -85.6604823104               | -86.9045945826                | -83.0105949974                | -84.0870476095               | -86.4928284531               |
| 15 |     |     |      | -84.2508135414 | -85.3024873031 | -84.8737566405 | -85.7812340076 | -85.0881515469 |     |      | -84.4497903323 | -81.8709552556               | -85.7105132344               | -88.3872660358                | -84.3020356272                | -81.8554081919               | -85.9619891753               | -87.2061014476                | -83.3121018623                | -84.3885544744               | -86.794335318                |
| 16 |     |     |      | -83.3506971462 | -84.7750823704 | -84.2834329201 | -85.6511899036 | -84.8400097826 |     |      | -84.2578529716 | -81.6403664028               | -85.175517067                | -88.0083021182                | -83.8018128218                | -81.7768104373               | -85.5000273151               | -86.8754947886                | -83.541129174                 | -84.6040973225               | -86.465776837                |
| 17 |     |     |      | -83.7608085242 | -85.1851937484 | -84.693544298  | -86.0613012815 | -85.2501211605 |     |      | -84.6877843084 | -82.0702977397               | -85.6054484038               | -88.331061078                 | -84.1245717814                | -82.0995693971               | -85.822786275                | -87.1982537483                | -83.8638881338                | -84.9268562822               | -86.7885357968               |
| 18 |     |     |      | -83.8600436416 | -84.5777012145 | -84.3029808929 | -85.2705968402 | -85.2687347714 |     |      | -84.5157773001 | -81.9160546647               | -85.8713948232               | -87.8912415821                | -83.3314654162                | -81.9994623477               | -85.6707906632               | -87.061828635                 | -84.0750122262                | -84.7667076527               | -86.5021070167               |
| 19 |     |     |      | -84.3285367629 | -85.0461943358 | -84.7714740142 | -85.7390899614 | -85.7372278926 |     |      | -84.9806029986 | -82.3808803631               | -86.3362205217               | -88.229548894                 | -83.669772728                 | -82.3377696597               | -86.0090979752               | -87.400135947                 | -84.4133195381                | -85.1050149646               | -86.8404143287               |



min_row: 1
max_row: 19
min_col: 9
max_col: 29
target_cell_row_idx: 9
target_cell_col_idx: 19
target_cell_value: Part1,Fvco=15 GHz,Fpd=200 MHz
formula: ="Part"&S2&",Fvco="&S3/1000&" GHz,"&"Fpd="&S4&" MHz"