| Value | Category | Cases | |
|---|---|---|---|
| 6 | Coal(stone coal, lignite) | 29 |
1.1%
|
| 7 | Charcoal | 2 |
0.1%
|
| 8 | Wood | 2476 |
95.9%
|
| 10 | Dung | 72 |
2.8%
|
| 11 | Sawdust | 2 |
0.1%
|
| 96 | Other (specify) | 1 |
0%
|
| 99 | Missing | 0 |
0%
|
| Sysmiss | 68 |