See the data version history.
The data of old versions are not available at WDCGG.

Updated Date	Version * : the latest version	GAW ID	Station/Mobile	Gas Species † met : with meteorological data	Platform	Sampling Type	Buffer	Organization	Details
2024-09-03	0077-6293-3001-02-01-6043 -2024-08-20-1243*	BSD	Bilsdale	CO	tower	insitu	tower42	UNIVBRIS (Atmospheric Chemistry Research Group School of Chemistry University of Bristol)	click