| Value | Category | Cases | |
|---|---|---|---|
| 0 | No/ None | 1671 |
53.5%
|
| 1 | gas | 340 |
10.9%
|
| 2 | Electricity | 746 |
23.9%
|
| 3 | Wood | 340 |
10.9%
|
| 4 | Olive cake | 7 |
0.2%
|
| 5 | Other | 17 |
0.5%
|
| Sysmiss | 1 |