| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 1 |
1.3%
|
| 2 | 1 |
1.3%
|
|
| 3 | 2 |
2.6%
|
|
| 5 | 5 |
6.5%
|
|
| 6 | 8 |
10.4%
|
|
| 7 | 13 |
16.9%
|
|
| 8 | 28 |
36.4%
|
|
| 9 | 13 |
16.9%
|
|
| 10 | Very high technical quality | 6 |
7.8%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 30 |