Emissions of “f-gases”: hydrofluorocarbons, perfluorocarbons and sulphur hexafluoride are measured against the base year 1995.
Caiff allyriadau o “nwyon f” sef: hydrofflworocarbonau, perfflworocarbonau a sylffwr hecsafflworid eu mesur yn unol â'r flwyddyn sylfaen sef 1995.