Atmospheric observations of SF6, HFC-32, HFC-125, and HFC-134a at Sottens, Switzerland

Atmospheric measurement data (mole fractions) for SF₆ (sulfur hexafluoride), HFC-32 (difluoromethane), HFC-125 (1,1,1,2,2-pentafluoroethane), and HFC-134a (1,1,1,2-tetrafluoroethane). Observations were made at Sottens, Switzerland, in 2021. Measurements were conducted using a Medusa pre-concentration unit coupled to gas chromatography and mass spectrometry (GC-MS), as is used within the global AGAGE network.