| Value | Category | Cases | |
|---|---|---|---|
| 0 | 396 |
89.6%
|
|
| 10 | 5 |
1.1%
|
|
| 15 | 4 |
0.9%
|
|
| 20 | 36 |
8.1%
|
|
| 30 | 1 |
0.2%
|
|
| Sysmiss | 31 |