| Value | Category | Cases | |
|---|---|---|---|
| 2 | 1 |
1.5%
|
|
| 3 | 1 |
1.5%
|
|
| 4 | 2 |
3.1%
|
|
| 5 | 6 |
9.2%
|
|
| 6 | 6 |
9.2%
|
|
| 7 | 6 |
9.2%
|
|
| 8 | 11 |
16.9%
|
|
| 9 | 4 |
6.2%
|
|
| 10 | Very high technical quality | 6 |
9.2%
|
| 11 | Don’t know | 7 |
10.8%
|
| Sysmiss | 15 |
23.1%
|