| Value | Category | Cases | |
|---|---|---|---|
| 0 | Month there is no specific period | 22 |
37.3%
|
| 1 | 3 |
5.1%
|
|
| 5 | 1 |
1.7%
|
|
| 6 | 1 |
1.7%
|
|
| 8 | 1 |
1.7%
|
|
| 12 | 5 |
8.5%
|
|
| 18 | 2 |
3.4%
|
|
| 24 | 6 |
10.2%
|
|
| 36 | 4 |
6.8%
|
|
| 48 | 1 |
1.7%
|
|
| 60 | 10 |
16.9%
|
|
| 120 | 1 |
1.7%
|
|
| 999 | 2 |
3.4%
|
|
| Sysmiss | 10857 |