| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 8 |
6.3%
|
| 3 | 2 |
1.6%
|
|
| 4 | 4 |
3.1%
|
|
| 5 | 5 |
3.9%
|
|
| 6 | 13 |
10.2%
|
|
| 7 | 18 |
14.1%
|
|
| 8 | 23 |
18%
|
|
| 9 | 18 |
14.1%
|
|
| 10 | Very high technical quality | 37 |
28.9%
|
| 11 | Don't know | 32 | |
| Sysmiss | 20 |