See the data version history.
The data of old versions are available only if the versions are included in Yearly fixed datasets.

 HCFC-124 _ MHD6016 _ surface - insitu _ AGAGE _ gc-ms

Updated Date	Version † met : with meteorological data	Details
2025-08-18	0004-6016-1404-01-01-2022 -2025-08-14-0802	The latest version