| Value | Category |
|---|---|
| 1 | central heating -monthly expenses |
| 2 | heating on electricity |
| 3 | solid fuels (coal, fire wood)-total expenses for last heatin |
| 4 | gas -total expenses for last heating season |
| 5 | liquid fuels (heating/crude oil)-total expenses for last hea |
| 99889988 | refusal |
| Sysmiss |