| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 22 |
30.6%
|
| 1 | One hour or less | 0 |
0%
|
| 10 | 1 |
1.4%
|
|
| 30 | 1 |
1.4%
|
|
| 36 | 4 |
5.6%
|
|
| 40 | 2 |
2.8%
|
|
| 48 | 5 |
6.9%
|
|
| 60 | 1 |
1.4%
|
|
| 70 | 1 |
1.4%
|
|
| 72 | 1 |
1.4%
|
|
| 96 | 4 |
5.6%
|
|
| 100 | 1 |
1.4%
|
|
| 104 | 3 |
4.2%
|
|
| 110 | 1 |
1.4%
|
|
| 112 | 1 |
1.4%
|
|
| 120 | 8 |
11.1%
|
|
| 136 | 1 |
1.4%
|
|
| 160 | 1 |
1.4%
|
|
| 176 | 1 |
1.4%
|
|
| 192 | 3 |
4.2%
|
|
| 200 | 1 |
1.4%
|
|
| 240 | 1 |
1.4%
|
|
| 288 | 3 |
4.2%
|
|
| 320 | 1 |
1.4%
|
|
| 576 | 2 |
2.8%
|
|
| 600 | 1 |
1.4%
|
|
| 960 | 1 |
1.4%
|
|
| Sysmiss | 85 |