| Value | Category | Cases | |
|---|---|---|---|
| 1 | Very low technical quality | 1 |
0.2%
|
| 2 | 2 |
0.4%
|
|
| 4 | 3 |
0.6%
|
|
| 5 | 17 |
3.6%
|
|
| 6 | 40 |
8.5%
|
|
| 7 | 107 |
22.7%
|
|
| 8 | 160 |
34%
|
|
| 9 | 96 |
20.4%
|
|
| 10 | Very high technical quality | 45 |
9.6%
|
| -99 | 11 | ||
| 11 | Don't know | 58 | |
| Sysmiss | 40 |