| Value | Category | Cases | |
|---|---|---|---|
| 1 | Open | 986 |
49.6%
|
| 2 | Wood | 671 |
33.8%
|
| 3 | Cement | 129 |
6.5%
|
| 4 | Tin and iron | 47 |
2.4%
|
| 5 | Others | 153 |
7.7%
|
| 9 | 42 | ||
| Sysmiss | 24177 |