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 - flask _ METRI _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-24	0055-2025-1003-01-02-9999 -2025-01-01-0055	The latest version
2020-03-16	0055-2025-1003-01-02-9999 -2020-03-13-1526	Included in Yearly Fixed Dataset 2024
2020-02-05	0055-2025-1003-01-02-9999 -2020-01-31-1720
2019-09-03	0055-2025-1003-01-02-9999 -2019-09-02-1351	Included in Yearly Fixed Dataset 2019
2018-10-18	0055-2025-1003-01-02-9999 -2018-10-18-0800	Included in Yearly Fixed Dataset 2018
2018-06-19	0055-2025-1003-01-02-9999 -2018-02-23-1500