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

 CO₂ _ LAU5014 _ surface - insitu _ NIWA _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-24	0057-5014-1001-01-01-9999 -2025-01-01-0057#21† met	The latest version
2024-03-07	0057-5014-1001-01-01-9999 -2024-03-05-1312#20† met	Included in Yearly Fixed Dataset 2024
2021-11-08	0057-5014-1001-01-01-9999 -2021-11-02-0151#19† met	Included in Yearly Fixed Dataset 2023