| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 0 |
0%
|
| 3 | 2 |
1.7%
|
|
| 4 | 3 |
2.6%
|
|
| 5 | 8 |
7%
|
|
| 6 | 15 |
13%
|
|
| 7 | 27 |
23.5%
|
|
| 8 | 31 |
27%
|
|
| 9 | 22 |
19.1%
|
|
| 10 | Very high technical quality | 7 |
6.1%
|
| -99 | 2 | ||
| 11 | Don't know | 14 | |
| Sysmiss | 28 |