| Value |
Category |
| 1 |
wood (cub metr) |
| 2 |
oil (liter) |
| 3 |
coal (tons) |
| 4 |
fuel oil (mazut-liter) |
| 5 |
other |
| 6 |
central gas supply |
| 7 |
electric heating |
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.