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

 CO _ BHD5012 _ surface - insitu _ ESNZ _ data1

Updated Date	Version † met : with meteorological data	Details
2026-07-13	0057-5012-3001-01-01-9999 -2026-06-30-0134	The latest version