| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Earth | 240 |
20%
|
| 2 | Gravel | 64 |
5.3%
|
| 3 | Stone | 24 |
2%
|
| 4 | Muram | 0 |
0%
|
| 5 | Paved/ Tarred | 864 |
72%
|
| 6 | Concrete | 8 |
0.7%
|