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

 CH₄ _ SUM6002 _ surface - insitu _ INSTAAR _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-24	0034-6002-1002-01-01-9999 -2025-01-01-0034	The latest version
2021-12-21	0034-6002-1002-01-01-9999 -2021-12-08-1049	Included in Yearly Fixed Dataset 2024
2019-09-03	0034-6002-1002-01-01-9999 -2019-09-02-1402	Included in Yearly Fixed Dataset 2021
2018-07-01	0034-6002-1002-01-01-9999 -2018-06-01-1002	Included in Yearly Fixed Dataset 2019