| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
3.3%
|
| 0 | No time was spent | 121 |
57.9%
|
| 1 | 11 |
5.3%
|
|
| 2 | 13 |
6.2%
|
|
| 3 | 2 |
1%
|
|
| 4 | 1 |
0.5%
|
|
| 5 | 6 |
2.9%
|
|
| 7 | 3 |
1.4%
|
|
| 10 | 11 |
5.3%
|
|
| 14 | 1 |
0.5%
|
|
| 15 | 3 |
1.4%
|
|
| 20 | 7 |
3.3%
|
|
| 25 | 1 |
0.5%
|
|
| 30 | 2 |
1%
|
|
| 40 | 3 |
1.4%
|
|
| 50 | 1 |
0.5%
|
|
| 56 | 1 |
0.5%
|
|
| 60 | 5 |
2.4%
|
|
| 70 | 2 |
1%
|
|
| 80 | 3 |
1.4%
|
|
| 90 | 1 |
0.5%
|
|
| 100 | 4 |
1.9%
|