| Value | Category | Cases | |
|---|---|---|---|
| -8 | 8 |
0%
|
|
| 1 | Mud | 8002 |
30%
|
| 2 | Concrete | 511 |
1.9%
|
| 3 | Wooden Poles | 9063 |
34%
|
| 4 | Metal poles | 101 |
0.4%
|
| 5 | Other | 265 |
1%
|
| 6 | None | 8693 |
32.6%
|
| Sysmiss | 4185 |