| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 1 |
0.6%
|
| 2 | 1 |
0.6%
|
|
| 3 | 2 |
1.1%
|
|
| 4 | 6 |
3.4%
|
|
| 5 | 10 |
5.7%
|
|
| 6 | 23 |
13.1%
|
|
| 7 | 40 |
22.9%
|
|
| 8 | 40 |
22.9%
|
|
| 9 | 31 |
17.7%
|
|
| 10 | Very high technical quality | 21 |
12%
|
| 11 | Don't know | 40 | |
| Sysmiss | 7 |