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

 CO₂ _ ISK2009 _ surface - remote _ KSNU _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-24	0041-2009-1001-01-08-9999 -2025-01-01-0041	The latest version
2018-07-10	0041-2009-1001-01-08-9999 -2018-06-01-1147	Included in Yearly Fixed Dataset 2024