| Value | Category | Cases | |
|---|---|---|---|
| 1 | adjacent | 44 |
11.5%
|
| 2 | less than 30 minutes | 215 |
56.1%
|
| 3 | between 30 minutes and 1 hour | 90 |
23.5%
|
| 4 | one to three hours walking | 31 |
8.1%
|
| 5 | more than 3 hours | 3 |
0.8%
|
| Sysmiss | 1772 |