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

 CO₂ _ CGO5011 _ surface - insitu _ CSIRO _ data3

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-18	0016-5011-1001-01-01-9997 -2025-01-01-0016#21	The latest version
2023-07-20	0016-5011-1001-01-01-9997 -2023-07-19-1827#20	Included in Yearly Fixed Dataset 2024
2022-08-19	0016-5011-1001-01-01-9997 -2022-08-19-1704#18	Included in Yearly Fixed Dataset 2022
2021-04-09	0016-5011-1001-01-01-9997 -2021-04-08-1004#17	Included in Yearly Fixed Dataset 2021
2019-07-26	0016-5011-1001-01-01-9997 -2019-07-19-1658#16	Included in Yearly Fixed Dataset 2020