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

 SF₆ _ ARH7009 _ surface - flask _ NIWA _ data1

Updated Date	Version † met : with meteorological data	Details
2025-07-28	0057-7009-1004-01-02-9999 -2025-07-15-0224† met	The latest version