| Value | Category | Cases | |
|---|---|---|---|
| 1 | open fireplace | 1031 |
26.4%
|
| 2 | mud | 1906 |
48.7%
|
| 3 | smokeless chul0 | 77 |
2%
|
| 4 | kerosene/gas | 864 |
22.1%
|
| 5 | other | 33 |
0.8%
|
| Sysmiss | 1 |