| Value |
Category |
| 0 |
|
| 1 |
district heating |
| 2 |
central heating with own installation |
| 3 |
electrical energy |
| 4 |
solid fuels |
| 5 |
liquid fuels |
| 6 |
combination |
| 7 |
gas |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.