| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 0 |
0%
|
| 2 | 2 |
1%
|
|
| 3 | 2 |
1%
|
|
| 4 | 1 |
0.5%
|
|
| 5 | 15 |
7.3%
|
|
| 6 | 14 |
6.8%
|
|
| 7 | 43 |
20.9%
|
|
| 8 | 51 |
24.8%
|
|
| 9 | 47 |
22.8%
|
|
| 10 | Very high technical quality | 31 |
15%
|
| -99 | 2 | ||
| 11 | Don't know | 29 | |
| Sysmiss | 23 |