| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 1 |
0.5%
|
| 2 | 1 |
0.5%
|
|
| 3 | 5 |
2.7%
|
|
| 4 | 7 |
3.8%
|
|
| 5 | 6 |
3.3%
|
|
| 6 | 12 |
6.5%
|
|
| 7 | 27 |
14.7%
|
|
| 8 | 36 |
19.6%
|
|
| 9 | 42 |
22.8%
|
|
| 10 | Very high technical quality | 47 |
25.5%
|
| 11 | Don't know | 0 |
0%
|
| Sysmiss | 148 |