| Value | Category | Cases | |
|---|---|---|---|
| -9 | 12 |
9%
|
|
| -8 | 2 |
1.5%
|
|
| 0 | 94 |
70.1%
|
|
| 1 | 19 |
14.2%
|
|
| 2 | 2 |
1.5%
|
|
| 3 | 4 |
3%
|
|
| 6 | 1 |
0.7%
|
|
| Sysmiss | 223 |