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

 N₂O _ MNM2029 _ surface - insitu _ JMA _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2025-09-08	0001-2029-1003-01-01-9999 -2025-09-01-0747† met	The latest version
2025-08-13	0001-2029-1003-01-01-9999 -2025-07-31-2347† met
2025-07-08	0001-2029-1003-01-01-9999 -2025-07-01-0038† met