| Value | Category | Cases | |
|---|---|---|---|
| 1 | Open fire or stove without chimney or hood | 209 |
98.6%
|
| 2 | Open fire or stove with chimney or hood | 0 |
0%
|
| 3 | Closed stove with chimney | 0 |
0%
|
| 4 | Other | 3 |
1.4%
|
| Sysmiss | 3726 |