| Value | Category | Cases | |
|---|---|---|---|
| -1 | missing | 0 |
0%
|
| 1 | earth | 23158 |
43.3%
|
| 2 | gravel | 6683 |
12.5%
|
| 3 | stone | 2219 |
4.2%
|
| 4 | muram | 2916 |
5.5%
|
| 5 | paved/ tarred | 15430 |
28.9%
|
| 6 | concrete | 2766 |
5.2%
|
| 7 | none of above | 272 |
0.5%
|