| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Metal, aluminum, tin or zinc | 1159 |
98.6%
|
| 2 | Tiles | 5 |
0.4%
|
| 3 | Shingles | 0 |
0%
|
| 4 | Thatch or grass | 0 |
0%
|
| 5 | Plastic sheets | 0 |
0%
|
| 6 | Asbestos | 0 |
0%
|
| 7 | Multiple materials | 0 |
0%
|
| 8 | Concrete | 11 |
0.9%
|
| 9 | Some other material | 0 |
0%
|
| 10 | Could not tell / could not see | 1 |
0.1%
|