| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 4 |
2.1%
|
| 2 | 8 |
4.2%
|
|
| 3 | 3 |
1.6%
|
|
| 4 | 8 |
4.2%
|
|
| 5 | 19 |
10%
|
|
| 6 | 16 |
8.4%
|
|
| 7 | 35 |
18.4%
|
|
| 8 | 49 |
25.8%
|
|
| 9 | 30 |
15.8%
|
|
| 10 | Very high technical quality | 18 |
9.5%
|
| -99 | 8 | ||
| 11 | Don't know | 26 | |
| Sysmiss | 30 |