| Value | Category | Cases | |
|---|---|---|---|
| 1-2 hours | 473 |
15.9%
|
|
| 2-4 hours | 875 |
29.5%
|
|
| 4-6 hours | 609 |
20.5%
|
|
| 6-10 hours | 273 |
9.2%
|
|
| Dont know | 206 |
6.9%
|
|
| Less than an hour | 282 |
9.5%
|
|
| More than 10 hours | 248 |
8.4%
|