| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Earth | 456 |
38%
|
| 2 | Gravel | 336 |
28%
|
| 3 | Stone | 8 |
0.7%
|
| 4 | Muram | 8 |
0.7%
|
| 5 | Paved/ Tarred | 384 |
32%
|
| 6 | Concrete | 8 |
0.7%
|