| Value | Category | Cases | |
|---|---|---|---|
| 1 | adjacent | 0 |
0%
|
| 2 | less than 30 minutes | 10 |
55.6%
|
| 3 | between 30 minutes and 1 hour | 5 |
27.8%
|
| 4 | one to three hours walking | 3 |
16.7%
|
| 5 | more than 3 hours | 0 |
0%
|
| Sysmiss | 2137 |