| Value | Category | Cases | |
|---|---|---|---|
| 0 | with great difficulty | 102 |
1.6%
|
| 1 | 13 |
0.2%
|
|
| 2 | 48 |
0.7%
|
|
| 3 | 108 |
1.7%
|
|
| 4 | 201 |
3.1%
|
|
| 5 | 711 |
11.1%
|
|
| 6 | 454 |
7.1%
|
|
| 7 | 929 |
14.5%
|
|
| 8 | 1562 |
24.4%
|
|
| 9 | 695 |
10.9%
|
|
| 10 | very easily | 1426 |
22.3%
|
| -8 | other error | 0 |
0%
|
| -7 | filter error | 0 |
0%
|
| -3 | inapplicable | 140 |
2.2%
|
| -2 | no answer | 5 |
0.1%
|
| -1 | does not know | 8 |
0.1%
|