| Value | Category | Cases | |
|---|---|---|---|
| 1 | adjacent | 25 |
11.6%
|
| 2 | less than 30 minutes | 111 |
51.4%
|
| 3 | between 30 minutes and 1 hour | 57 |
26.4%
|
| 4 | one to three hours walking | 21 |
9.7%
|
| 5 | more than 3 hours | 2 |
0.9%
|
| Sysmiss | 1939 |