[] Natural gas supply network
[] Liquefied petroleum gas supply network
[] Dwelling's own tank or tank for few neighboring buildings
[] No piped gas supply

Natural gas supply network is marked by the enumerator if gas supply is connected to the public natural gas supply.

Liquefied petroleum gas supply network is marked by the enumerator if gas supply is connected to the public liquefied petroleum gas supply.

Dwelling's own tank or tank for a few neighbouring buildings is marked by the enumerator if the dwelling has liquefied petroleum gas supply (propane-butane) from own tank or a tank for a few buildings.

No piped gas supply is marked by the enumerator if the dwelling does not have a gas supply.