| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 8 |
0%
|
| 1 | Earth | 20572 |
44.9%
|
| 2 | Gravel | 5260 |
11.5%
|
| 3 | Stone | 1535 |
3.3%
|
| 4 | Muram | 2390 |
5.2%
|
| 5 | Paved/ Tarred | 13647 |
29.8%
|
| 6 | Concrete | 2411 |
5.3%
|