| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 3 |
2.2%
|
| 2 | 1 |
0.7%
|
|
| 3 | 1 |
0.7%
|
|
| 4 | 3 |
2.2%
|
|
| 5 | 4 |
2.9%
|
|
| 6 | 11 |
7.9%
|
|
| 7 | 25 |
18%
|
|
| 8 | 41 |
29.5%
|
|
| 9 | 37 |
26.6%
|
|
| 10 | Very high technical quality | 13 |
9.4%
|
| -99 | 3 | ||
| 11 | Don't know | 32 | |
| Sysmiss | 30 |