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

 C¹⁸O₂ _ CPT1009 _ surface - flask _ NOAA _ sil

Updated Date	Version † met : with meteorological data	Details
2024-12-25	0002-1009-1103-01-02-3101 -2025-01-01-0002	The latest version
2023-11-30	0002-1009-1103-01-02-3101 -2023-11-30-0851	Included in Yearly Fixed Dataset 2024
2022-07-12	0002-1009-1103-01-02-3101 -2022-07-05-1524	Included in Yearly Fixed Dataset 2023
2021-12-20	0002-1009-1103-01-02-3101 -2021-12-08-1043
2019-09-03	0002-1009-1103-01-02-3101 -2019-09-02-1741	Included in Yearly Fixed Dataset 2021
2019-04-15	0002-1009-1103-01-02-3101 -2019-04-15-0721
2018-10-05	0002-1009-1103-01-02-3101 -2018-10-03-1617	Included in Yearly Fixed Dataset 2018