| Number | Percent |
10 hours | 8 | 36 |
14 hours | 02 | 9 |
16 hours | 02 | 9 |
18 hours | 04 | 18 |
24 hours | 02 | 9 |
45 hours | 01 | 5 |
48 hours | 03 | 14 |
Total | 22 | 100 |