| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 12 |
100%
|
| Less than 1 hour | 0 | ||
| 1 | 0 | ||
| 2 | 0 | ||
| 3 | 0 | ||
| 4 | 0 | ||
| 5 | 0 | ||
| 10 | 0 | ||
| 15 | 0 | ||
| 30 | 0 | ||
| 45 | 0 | ||
| 50 | 0 |