| Value | Category | Cases | |
|---|---|---|---|
| 6 | 1 |
6.3%
|
|
| 12 | 2 |
12.5%
|
|
| 13 | 6 |
37.5%
|
|
| 15 | 4 |
25%
|
|
| 17 | 2 |
12.5%
|
|
| 18 | 1 |
6.3%
|
|
| Sysmiss | 983 |