| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 2 |
0.9%
|
| 3 | 4 |
1.8%
|
|
| 4 | 8 |
3.6%
|
|
| 5 | 12 |
5.3%
|
|
| 6 | 20 |
8.9%
|
|
| 7 | 43 |
19.1%
|
|
| 8 | 71 |
31.6%
|
|
| 9 | 41 |
18.2%
|
|
| 10 | Very high technical quality | 24 |
10.7%
|
| 11 | Don't know | 36 | |
| Sysmiss | 8 |