| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 14 |
3.9%
|
| 0 | No time was spent | 141 |
39.1%
|
| 1 | 47 |
13%
|
|
| 2 | 24 |
6.6%
|
|
| 3 | 16 |
4.4%
|
|
| 4 | 4 |
1.1%
|
|
| 5 | 33 |
9.1%
|
|
| 6 | 2 |
0.6%
|
|
| 7 | 2 |
0.6%
|
|
| 8 | 2 |
0.6%
|
|
| 10 | 36 |
10%
|
|
| 12 | 3 |
0.8%
|
|
| 13 | 2 |
0.6%
|
|
| 15 | 6 |
1.7%
|
|
| 20 | 10 |
2.8%
|
|
| 25 | 4 |
1.1%
|
|
| 30 | 6 |
1.7%
|
|
| 40 | 3 |
0.8%
|
|
| 50 | 5 |
1.4%
|
|
| 100 | 1 |
0.3%
|