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

 N₂O _ WAO6391 _ surface - insitu _ ICOS _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2025-06-23	0162-6391-1003-01-01-9999 -2025-04-25-0001	The latest version