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
2023-08-16	0006-8002-7001-05-02-9999 -2023-08-15-1832*	AOA	Aircraft (Western North Pacific)	O2/N2 ratio	aircraft	flask	data1	AIST (National Institute of Advanced Industrial Science and Technology)	click
2023-06-07	0006-8002-7001-05-02-9999 -2023-06-06-1158	AOA	Aircraft (Western North Pacific)	O2/N2 ratio	aircraft	flask	data1	AIST (National Institute of Advanced Industrial Science and Technology)
2021-09-22	0006-8002-7001-05-02-9999 -2021-09-16-1302	AOA	Aircraft (Western North Pacific)	O2/N2 ratio	aircraft	flask	data1	AIST (National Institute of Advanced Industrial Science and Technology)