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

 CO₂ _ WNK6029 _ surface - insitu _ IMKIFU _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-24	0031-6029-1001-01-01-9999 -2025-01-01-0031	The latest version
2023-05-17	0031-6029-1001-01-01-9999 -2023-05-16-2357	Included in Yearly Fixed Dataset 2024
2018-07-20	0031-6029-1001-01-01-9999 -2018-07-17-1753	Included in Yearly Fixed Dataset 2022