| Value | Category | Cases | |
|---|---|---|---|
| 1 | 185 |
9.7%
|
|
| 2 | 585 |
30.7%
|
|
| 3 | 416 |
21.8%
|
|
| 4 | 391 |
20.5%
|
|
| 5 | 152 |
8%
|
|
| 6 | 97 |
5.1%
|
|
| 7 | 44 |
2.3%
|
|
| 8 | 8 hours or more | 36 |
1.9%
|