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

 N₂O _ GSN2025 _ surface - insitu _ GERC _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-24	0052-2025-1003-01-01-9999 -2025-01-01-0052	The latest version
2020-07-28	0052-2025-1003-01-01-9999 -2020-07-28-0938	Included in Yearly Fixed Dataset 2024
2020-03-16	0052-2025-1003-01-01-9999 -2020-03-13-1525
2018-06-14	0052-2025-1003-01-01-9999 -2018-03-15-1245	Included in Yearly Fixed Dataset 2019