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

 H₂ _ CGO5011 _ surface - insitu _ AGAGE _ gc-md-pdd

Updated Date	Version † met : with meteorological data	Details
2026-09-01	0004-5011-4001-01-01-2025 -2026-08-10-0023	The latest version
2025-08-18	0004-5011-4001-01-01-2025 -2025-08-18-1100	Included in Yearly Fixed Dataset 2025
2025-01-22	0004-5011-4001-01-01-2025 -2025-01-21-0902