| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Earth | 248 |
20.7%
|
| 2 | Gravel | 40 |
3.3%
|
| 3 | Stone | 32 |
2.7%
|
| 4 | Muram | 240 |
20%
|
| 5 | Paved/ Tarred | 480 |
40%
|
| 6 | Concrete | 152 |
12.7%
|
| 7 | None of above | 8 |
0.7%
|