| Value | Category |
|---|---|
| 1 | Electricity, gas, water, sewerage, and central heating |
| 2 | Electricity, gas, water, and sewerage |
| 3 | Electricity, water, sewerage, and central heating |
| 4 | Electricity, water, and sewerage |
| 5 | Electricity and gas in the kitchen |
| 6 | Water and sewerage |
| 7 | Electricity |
| 8 | Other situations |
| 9 | No installations |