| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 14 |
1%
|
| 1 | Central heating | 2 |
0.1%
|
| 2 | Electricity | 414 |
29.6%
|
| 3 | Natural gas | 229 |
16.4%
|
| 4 | Liquefiedgas | 1 |
0.1%
|
| 5 | Oil and diesel | 1 |
0.1%
|
| 6 | Wood | 323 |
23.1%
|
| 9 | Other | 413 |
29.6%
|
| Sysmiss | 3787 |