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

 CO _ ASK1003 _ surface - insitu _ ONM _ data1

Updated Date	Version † met : with meteorological data	Details
2024-12-24	0059-1003-3001-01-01-9999 -2025-01-01-0059	The latest version
2022-05-27	0059-1003-3001-01-01-9999 -2022-05-27-1513	Included in Yearly Fixed Dataset 2024
2018-07-06	0059-1003-3001-01-01-9999 -2018-06-08-2146	Included in Yearly Fixed Dataset 2021