| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
100%
|
| Less than 1 hour | 0 | ||
| 1 | 0 | ||
| 2 | 0 | ||
| 3 | 0 | ||
| 4 | 0 | ||
| 5 | 0 | ||
| 6 | 0 | ||
| 8 | 0 | ||
| 48 | 0 |