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
2023-11-10	0006-2012-7001-01-01-9999 -2023-11-08-0331*	RYO	Ryori	O2/N2 ratio	surface	insitu	data1	AIST (National Institute of Advanced Industrial Science and Technology)	click