| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 4 |
1.5%
|
| 2 | 1 |
0.4%
|
|
| 3 | 3 |
1.1%
|
|
| 4 | 8 |
3%
|
|
| 5 | 25 |
9.3%
|
|
| 6 | 28 |
10.4%
|
|
| 7 | 55 |
20.4%
|
|
| 8 | 85 |
31.5%
|
|
| 9 | 48 |
17.8%
|
|
| 10 | Very high technical quality | 13 |
4.8%
|
| -99 | 3 | ||
| 11 | Don't know | 34 | |
| Sysmiss | 53 |