| Value | Category | Cases | |
|---|---|---|---|
| 1 | hours | 7 |
0.9%
|
| 2 | days | 15 |
1.9%
|
| 3 | months | 756 |
96.3%
|
| 4 | years | 7 |
0.9%
|
| Sysmiss | 591 |