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

 ¹³CH₄ _ CHL4004 _ surface - flask _ TU _ data1

Updated Date	Version † met : with meteorological data	Details
2024-12-25	0070-4004-1101-01-02-9999 -2025-01-01-0110	The latest version
2023-02-01	0070-4004-1101-01-02-9999 -2023-01-26-0918	Included in Yearly Fixed Dataset 2024
2020-10-06	0070-4004-1101-01-02-9999 -2020-10-06-1500	Included in Yearly Fixed Dataset 2022
2019-10-25	0070-4004-1101-01-02-9999 -2019-10-23-1349	Included in Yearly Fixed Dataset 2020