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

 CH₄ _ SPO7011 _ surface - flask _ NOAA _ ccgg

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-25	0002-7011-1002-01-02-3001 -2025-01-01-0002	The latest version
2024-08-30	0002-7011-1002-01-02-3001 -2024-08-01-0821#20	Included in Yearly Fixed Dataset 2024
2023-09-01	0002-7011-1002-01-02-3001 -2023-08-29-1037#19	Included in Yearly Fixed Dataset 2023
2022-08-17	0002-7011-1002-01-02-3001 -2022-08-02-1210#18	Included in Yearly Fixed Dataset 2022
2021-08-10	0002-7011-1002-01-02-3001 -2021-07-21-1345#17	Included in Yearly Fixed Dataset 2021
2020-08-13	0002-7011-1002-01-02-3001 -2020-07-31-0900#16	Included in Yearly Fixed Dataset 2020
2019-08-30	0002-7011-1002-01-02-3001 -2019-07-31-0735#15	Included in Yearly Fixed Dataset 2019
2018-09-25	0002-7011-1002-01-02-3001 -2018-08-02-1629#14	Included in Yearly Fixed Dataset 2018
2018-06-27	0002-7011-1002-01-02-3001 -2018-03-12-1311
2017-02-13	0002-7011-1002-01-02-3001 -2017-02-08-1535