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

 CH₄ _ BSL8023 _ ship - flask _ NIWA _ data1

Updated Date	Version # : used for analysis in the WMO GHG Bulletin (#Volume) † met : with meteorological data	Details
2024-12-24	0057-8023-1002-06-02-9999 -2025-01-01-0057† met	The latest version
2020-02-25	0057-8023-1002-06-02-9999 -2019-10-16-1145† met	Included in Yearly Fixed Dataset 2024
2018-05-25	0057-8023-1002-06-02-9999 -2018-01-26-1037	Included in Yearly Fixed Dataset 2019