| Value | Category | Cases | |
|---|---|---|---|
| 1 | Paved, multi-lane in each direction | 0 |
0%
|
| 2 | Paved, single-lane in each direction | 3 |
30%
|
| 3 | Gravel | 6 |
60%
|
| 4 | Dirt | 1 |
10%
|
| Sysmiss | 279 |