| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 3 |
0.9%
|
| 2 | 4 |
1.2%
|
|
| 3 | 8 |
2.4%
|
|
| 4 | 22 |
6.7%
|
|
| 5 | 39 |
11.9%
|
|
| 6 | 57 |
17.4%
|
|
| 7 | 78 |
23.9%
|
|
| 8 | 64 |
19.6%
|
|
| 9 | 30 |
9.2%
|
|
| 10 | Very high technical quality | 22 |
6.7%
|
| 11 | Don't know | 72 | |
| Sysmiss | 22 |