| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 1 |
0.7%
|
| 2 | 2 |
1.3%
|
|
| 3 | 4 |
2.7%
|
|
| 4 | 4 |
2.7%
|
|
| 5 | 13 |
8.7%
|
|
| 6 | 16 |
10.7%
|
|
| 7 | 40 |
26.8%
|
|
| 8 | 35 |
23.5%
|
|
| 9 | 20 |
13.4%
|
|
| 10 | Very high technical quality | 14 |
9.4%
|
| 11 | Don't know | 36 | |
| Sysmiss | 9 |