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

 HCFC-142b _ MHD6016 _ surface - insitu _ AGAGE _ gc-ms-magnum

Updated Date	Version † met : with meteorological data	Details
2026-09-01	0004-6016-1402-01-01-2027 -2026-08-10-0029	The latest version