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

 CH₄ _ CGO5011 _ surface - insitu _ AGAGE _ picarro-2

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2026-09-01	0004-5011-1002-01-01-2026 -2026-08-10-0016	The latest version