| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Earth | 816 |
68%
|
| 2 | Gravel | 152 |
12.7%
|
| 3 | Stone | 8 |
0.7%
|
| 4 | Muram | 0 |
0%
|
| 5 | Paved/ Tarred | 208 |
17.3%
|
| 6 | Concrete | 0 |
0%
|
| 7 | None of above | 16 |
1.3%
|