| Value | Category | Cases | |
|---|---|---|---|
| 1 | TAR / TARMAC (PAVED) | 57 |
14.7%
|
| 2 | GRAVEL | 19 |
4.9%
|
| 3 | DUST | 308 |
79.4%
|
| 99 | Other (specify) | 4 |
1%
|