| Value | Category | Cases | |
|---|---|---|---|
| 1 | Do not use anything | 1 |
0.2%
|
| 2 | Water only | 235 |
49.8%
|
| 3 | Ash | 192 |
40.7%
|
| 4 | Sand | 38 |
8.1%
|
| 5 | Other | 2 |
0.4%
|
| 6 | Don't know/No response | 4 |
0.8%
|