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
2023-09-05	0037-6055-3001-01-01-9999 -2023-09-05-1047*	ECO	Lecce Environmental-Climate Observatory	CO	surface	insitu	data1	ISAC (National Research Council, Institute of Atmospheric Sciences and Climate)	click
2021-05-31	0037-6055-3001-01-01-9999 -2021-05-29-1434	ECO	Lecce Environmental-Climate Observatory	CO	surface	insitu	data1	ISAC (National Research Council, Institute of Atmospheric Sciences and Climate)
2019-03-07	0037-6055-3001-01-01-9999 -2019-01-28-2347	ECO	Lecce Environmental-Climate Observatory	CO	surface	insitu	data1	ISAC (National Research Council, Institute of Atmospheric Sciences and Climate)
2018-08-21	0037-6055-3001-01-01-9999 -2018-06-27-1536	ECO	Lecce Environmental-Climate Observatory	CO	surface	insitu	data1	ISAC (National Research Council, Institute of Atmospheric Sciences and Climate)