| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 0 |
0%
|
| 2 | 2 | 1 |
0.7%
|
| 3 | 3 | 4 |
2.9%
|
| 4 | 4 | 4 |
2.9%
|
| 5 | 5 | 6 |
4.3%
|
| 6 | 6 | 15 |
10.7%
|
| 7 | 7 | 32 |
22.9%
|
| 8 | 8 | 25 |
17.9%
|
| 9 | 9 | 14 |
10%
|
| 10 | Very high technical quality | 16 |
11.4%
|
| 11 | Don't know | 23 |
16.4%
|
| Sysmiss | 6 |