| Value | Category | Cases | |
|---|---|---|---|
| 1 | Natural: EARTH | 3959 |
60.2%
|
| 2 | Natural: DUNG | 342 |
5.2%
|
| 3 | Rudimentary mat; WOOD, TIMER | 1715 |
26.1%
|
| 4 | Fully processed: Concrete | 460 |
7%
|
| 5 | OTHER | 105 |
1.6%
|