| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 58 |
38.7%
|
| 1 | One hour or less | 11 |
7.3%
|
| 3 | 1 |
0.7%
|
|
| 4 | 3 |
2%
|
|
| 5 | 3 |
2%
|
|
| 8 | 3 |
2%
|
|
| 10 | 2 |
1.3%
|
|
| 12 | 3 |
2%
|
|
| 16 | 1 |
0.7%
|
|
| 20 | 6 |
4%
|
|
| 24 | 6 |
4%
|
|
| 30 | 2 |
1.3%
|
|
| 36 | 1 |
0.7%
|
|
| 48 | 10 |
6.7%
|
|
| 50 | 2 |
1.3%
|
|
| 56 | 2 |
1.3%
|
|
| 60 | 4 |
2.7%
|
|
| 71 | 1 |
0.7%
|
|
| 72 | 4 |
2.7%
|
|
| 80 | 3 |
2%
|
|
| 96 | 5 |
3.3%
|
|
| 100 | 5 |
3.3%
|
|
| 120 | 3 |
2%
|
|
| 144 | 2 |
1.3%
|
|
| 168 | 1 |
0.7%
|
|
| 188 | 1 |
0.7%
|
|
| 200 | 1 |
0.7%
|
|
| 240 | 1 |
0.7%
|
|
| 244 | 1 |
0.7%
|
|
| 288 | 1 |
0.7%
|
|
| 336 | 1 |
0.7%
|
|
| 360 | 1 |
0.7%
|
|
| 362 | 1 |
0.7%
|