我正在尝试确定基线和后续日期之间的月数，我的日期如下所示
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| Baseline | Follow_Up |
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| 10/6/15 | 10/10/17 |
| 10/6/15 | 4/20/18 |
| 10/6/15 | 4/18/18 |
| 10/6/15 | 7/2/18 |
| 10/6/15 | 8/8/17 |
| 10/6/15 | 1/17/18 |
| 10/6/15 | 10/19/17 |
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我正在寻找这样的输出
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| Baseline | Follow_Up | Months difference|
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| 10/6/15 | 10/10/17 |24.5 |
| 10/6/15 | 4/20/18 |30.9 |
| 10/6/15 | 4/18/18 |30.8 |
| 10/6/15 | 7/2/18 |33.3 |
| 10/6/15 …