| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15mn | 562 |
38.1%
|
| 2 | 15mn - 30mn | 332 |
22.5%
|
| 3 | 30mn - 60mn | 354 |
24%
|
| 4 | 1hour - 2hours | 168 |
11.4%
|
| 5 | Over 2 hours | 57 |
3.9%
|
| 6 | 4 |
0.3%
|
|
| Sysmiss | 43 |