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	0017-3005-3001-01-01-9999 -2023-08-15-1530*	TLL	El Tololo	CO	surface	insitu	data1	DMC (Direccion Meteorologica de Chile)	click
2023-07-05	0017-3005-3001-01-01-9999 -2023-07-05-1046	TLL	El Tololo	CO	surface	insitu	data1	DMC (Direccion Meteorologica de Chile)
2022-07-08	0017-3005-3001-01-01-9999 -2022-07-06-1448	TLL	El Tololo	CO	surface	insitu	data1	DMC (Direccion Meteorologica de Chile)
2022-05-18	0017-3005-3001-01-01-9999 -2022-05-13-1354	TLL	El Tololo	CO	surface	insitu	data1	DMC (Direccion Meteorologica de Chile)
2021-07-24	0017-3005-3001-01-01-9999 -2021-07-20-1412	TLL	El Tololo	CO	surface	insitu	data1	DMC (Direccion Meteorologica de Chile)
2020-07-02	0017-3005-3001-01-01-9999 -2020-06-30-2332	TLL	El Tololo	CO	surface	insitu	data1	DMC (Direccion Meteorologica de Chile)
2019-06-07	0017-3005-3001-01-01-9999 -2019-06-07-0922	TLL	El Tololo	CO	surface	insitu	data1	DMC (Direccion Meteorologica de Chile)
2018-09-13	0017-3005-3001-01-01-9999 -2018-09-13-1838	TLL	El Tololo	CO	surface	insitu	data1	DMC (Direccion Meteorologica de Chile)
2018-06-19	0017-3005-3001-01-01-9999 -2018-06-04-1314	TLL	El Tololo	CO	surface	insitu	data1	DMC (Direccion Meteorologica de Chile)