| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15mn | 320 |
26.4%
|
| 2 | 15mn-30mn | 348 |
28.8%
|
| 3 | 30mn-60mn | 360 |
29.8%
|
| 4 | 1hour-2hours | 140 |
11.6%
|
| 6 | Over 2 hours | 42 |
3.5%
|
| Sysmiss | 68 |