| Value | Category | Cases | |
|---|---|---|---|
| 1 | Coal | 3812 |
45%
|
| 2 | Charcoal | 116 |
1.4%
|
| 3 | Wood, straw, grass, sawdust | 2515 |
29.7%
|
| 4 | Dung | 2018 |
23.8%
|
| 6 | Other | 3 |
0%
|
| Sysmiss | 5620 |