| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Earth | 496 |
31%
|
| 2 | Gravel | 144 |
9%
|
| 3 | Stone | 64 |
4%
|
| 4 | Muram | 40 |
2.5%
|
| 5 | Paved/ Tarred | 816 |
51%
|
| 6 | Concrete | 40 |
2.5%
|