| Value | Category | Cases | |
|---|---|---|---|
| 1 | electricity | 1189 |
25.6%
|
| 2 | wood | 1848 |
39.8%
|
| 3 | gas | 79 |
1.7%
|
| 4 | oil, petrol | 19 |
0.4%
|
| 5 | coal | 615 |
13.2%
|
| 6 | dung | 774 |
16.7%
|
| 7 | cotton stalks | 73 |
1.6%
|
| 8 | none/no heating | 26 |
0.6%
|
| 9 | other | 21 |
0.5%
|