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

 CO₂ _ MDN6418 _ surface - flask _ ENEA _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-23	0024-6418-1001-01-02-9999 -2025-01-01-0024† met	The latest version
2023-08-03	0024-6418-1001-01-02-9999 -2023-07-04-1143#20† met	Included in Yearly Fixed Dataset 2024
2021-06-25	0024-6418-1001-01-02-9999 -2021-06-23-1922#18	Included in Yearly Fixed Dataset 2022
2021-02-08	0024-6418-1001-01-02-9999 -2021-01-27-1346