| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| -9 | 5 | 8844 |
0%
|
|
| 1 | straw | 1075 | 1998169 |
2.8%
|
| 2 | mud | 514 | 1010404 |
1.4%
|
| 3 | wood | 6635 | 13340642 |
19%
|
| 4 | steel ( galvanised) | 172 | 260154 |
0.4%
|
| 5 | reinforced concrete | 28294 | 52682604 |
74.9%
|
| 6 | tiles | 237 | 554795 |
0.8%
|
| 7 | other | 208 | 467229 |
0.7%
|