| Value | Category | Cases | |
|---|---|---|---|
| 1 | Electricity | 62 |
3.1%
|
| 6 | Coal (stone coal, lignite, wood coal) | 4 |
0.2%
|
| 7 | Charcoal | 12 |
0.6%
|
| 8 | Wood | 1849 |
92.5%
|
| 9 | Straw, shrubs, grass | 4 |
0.2%
|
| 10 | Dung | 49 |
2.5%
|
| 11 | Sawdust | 2 |
0.1%
|
| Sysmiss | 18 |
0.9%
|