See the data version history.
The data of old versions are available only if the versions are included in Yearly fixed datasets.

 CO _ CDL4008 _ surface - insitu _ ECCC _ data1

Updated Date	Version † met : with meteorological data	Details
2024-12-19	0020-4008-3001-01-01-9999 -2025-01-01-0020	The latest version
2022-09-05	0020-4008-3001-01-01-9999 -2022-09-05-0724	Included in Yearly Fixed Dataset 2024
2019-09-03	0020-4008-3001-01-01-9999 -2019-09-02-1446	Included in Yearly Fixed Dataset 2021
2018-10-25	0020-4008-3001-01-01-9999 -2018-10-24-0659	Included in Yearly Fixed Dataset 2018
2018-10-23	0020-4008-3001-01-01-9999 -2018-10-19-1633
2018-06-13	0020-4008-3001-01-01-9999 -2018-03-22-1202