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

 CO₂ _ PRS6039 _ surface - insitu _ RSE _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-24	0064-6039-1001-01-01-9999 -2025-01-01-0104	The latest version
2023-05-17	0064-6039-1001-01-01-9999 -2023-05-17-0002#20	Included in Yearly Fixed Dataset 2024
2021-10-14	0064-6039-1001-01-01-9999 -2021-10-12-1333#18	Included in Yearly Fixed Dataset 2022
2019-07-03	0064-6039-1001-01-01-9999 -2019-06-28-0828#17	Included in Yearly Fixed Dataset 2021
2018-08-02	0064-6039-1001-01-01-9999 -2018-06-11-1124#14	Included in Yearly Fixed Dataset 2018