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

 ¹³CO₂ _ CBA4005 _ surface - flask _ NOAA _ sil

Updated Date	Version † met : with meteorological data	Details
2025-08-29	0002-4005-1102-01-02-3101 -2025-08-21-1301	The latest version
2024-12-25	0002-4005-1102-01-02-3101 -2025-01-01-0002
2022-07-12	0002-4005-1102-01-02-3101 -2022-07-05-1524	Included in Yearly Fixed Dataset 2024
2021-12-20	0002-4005-1102-01-02-3101 -2021-12-08-1043
2019-09-03	0002-4005-1102-01-02-3101 -2019-09-02-1741	Included in Yearly Fixed Dataset 2021
2018-10-05	0002-4005-1102-01-02-3101 -2018-10-03-1416	Included in Yearly Fixed Dataset 2018
2018-06-27	0002-4005-1102-01-02-3101 -2018-04-09-1415