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

 SF₆ _ HFM4020 _ surface - flask _ NOAA _ hats-otto

Updated Date	Version † met : with meteorological data	Details
2025-08-29	0002-4020-1004-01-02-3005 -2025-08-21-1302	The latest version
2024-12-25	0002-4020-1004-01-02-3005 -2025-01-01-0002
2024-11-06	0002-4020-1004-01-02-3005 -2024-11-05-0757
2022-07-06	0002-4020-1004-01-02-3005 -2022-06-27-1259	Included in Yearly Fixed Dataset 2024
2021-08-13	0002-4020-1004-01-02-3005 -2021-08-11-1436	Included in Yearly Fixed Dataset 2021
2019-09-03	0002-4020-1004-01-02-3005 -2019-09-02-1741	Included in Yearly Fixed Dataset 2020
2018-06-26	0002-4020-1004-01-02-3005 -2018-03-16-1644	Included in Yearly Fixed Dataset 2018