| Value | Category | Cases | |
|---|---|---|---|
| 1 | electricity | 21 |
9.7%
|
| 2 | wood | 74 |
34.3%
|
| 3 | gas | 16 |
7.4%
|
| 4 | oil, petrol | 0 |
0%
|
| 5 | coal | 53 |
24.5%
|
| 6 | dung | 49 |
22.7%
|
| 7 | cotton stalks | 0 |
0%
|
| 8 | none/no heating | 2 |
0.9%
|
| 9 | other | 1 |
0.5%
|