| Value | Category | Cases | |
|---|---|---|---|
| 1 | Briquette | 2 |
0.1%
|
| 2 | Electric powered heater/cooker | 5 |
0.1%
|
| 3 | Gas | 3594 |
98%
|
| 4 | None | 1 |
0%
|
| 5 | Oil (e.g. furnace oil) | 39 |
1.1%
|
| 6 | Other | 1 |
0%
|
| 7 | Wood | 24 |
0.7%
|