| Value | Category | Cases | |
|---|---|---|---|
| 1 | Natural: EARTH | 3685 |
53%
|
| 2 | Natural: DUNG | 592 |
8.5%
|
| 3 | Rudimentary mat; WOOD, TIMER | 2060 |
29.6%
|
| 4 | Fully processed: Concrete | 439 |
6.3%
|
| 5 | OTHER | 180 |
2.6%
|
| Sysmiss | 9504 |