| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 0 |
0%
|
| 3 | 4 |
2.5%
|
|
| 4 | 2 |
1.2%
|
|
| 5 | 5 |
3.1%
|
|
| 6 | 15 |
9.3%
|
|
| 7 | 35 |
21.7%
|
|
| 8 | 50 |
31.1%
|
|
| 9 | 33 |
20.5%
|
|
| 10 | Very high technical quality | 17 |
10.6%
|
| 11 | Don't know | 24 | |
| Sysmiss | 8 |