| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 8 |
0.3%
|
| 1 | Earth | 688 |
28.8%
|
| 2 | Gravel | 16 |
0.7%
|
| 3 | Stone | 56 |
2.3%
|
| 4 | Muram | 976 |
40.8%
|
| 5 | Paved/ Tarred | 632 |
26.4%
|
| 6 | Concrete | 16 |
0.7%
|