| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15mn | 2265 |
55.9%
|
| 2 | 15mn-30mn | 772 |
19.1%
|
| 3 | 30mn-60mn | 647 |
16%
|
| 4 | 1hour-2hours | 274 |
6.8%
|
| 6 | Over 2 hours | 92 |
2.3%
|
| Sysmiss | 37 |