| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Earth | 272 |
22.7%
|
| 2 | Gravel | 40 |
3.3%
|
| 3 | Stone | 64 |
5.3%
|
| 4 | Muram | 32 |
2.7%
|
| 5 | Paved/ Tarred | 24 |
2%
|
| 6 | Concrete | 767 |
64%
|