| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 11 |
3.6%
|
| 0 | No time was spent | 79 |
25.9%
|
| 1 | 53 |
17.4%
|
|
| 2 | 49 |
16.1%
|
|
| 3 | 15 |
4.9%
|
|
| 4 | 9 |
3%
|
|
| 5 | 38 |
12.5%
|
|
| 8 | 2 |
0.7%
|
|
| 10 | 24 |
7.9%
|
|
| 15 | 8 |
2.6%
|
|
| 20 | 10 |
3.3%
|
|
| 24 | 1 |
0.3%
|
|
| 30 | 1 |
0.3%
|
|
| 40 | 2 |
0.7%
|
|
| 50 | 2 |
0.7%
|
|
| 80 | 1 |
0.3%
|