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

 N₂O _ MKO5026 _ surface - flask _ NOAA _ ccgg

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-25	0002-5026-1003-01-02-3001 -2025-01-01-0002	The latest version
2024-08-30	0002-5026-1003-01-02-3001 -2024-08-01-0956	Included in Yearly Fixed Dataset 2024
2023-09-04	0002-5026-1003-01-02-3001 -2023-08-29-1126	Included in Yearly Fixed Dataset 2023