| Value | Category | Cases | |
|---|---|---|---|
| 0 | 16 |
31.4%
|
|
| 15 | 1 |
2%
|
|
| 25 | 3 |
5.9%
|
|
| 30 | 31 |
60.8%
|
|
| Sysmiss | 422 |