| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Earth | 1888 |
78.7%
|
| 2 | Gravel | 88 |
3.7%
|
| 3 | Stone | 88 |
3.7%
|
| 4 | Muram | 80 |
3.3%
|
| 5 | Paved/ Tarred | 200 |
8.3%
|
| 6 | Concrete | 16 |
0.7%
|
| 7 | None of above | 40 |
1.7%
|