| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Earth | 176 |
14.7%
|
| 2 | Gravel | 464 |
38.7%
|
| 3 | Stone | 72 |
6%
|
| 4 | Muram | 8 |
0.7%
|
| 5 | Paved/ Tarred | 464 |
38.7%
|
| 6 | Concrete | 16 |
1.3%
|