Tropomi provides one SO2 data product:

Sulphur dioxide

This page shows the most recent validation reports.

There are no validation reports available for this target.
ROCVR Reports
Quarterly Validation Report of the Sentinel-5 Precursor Operational Data Products #04: April 2018 – August 2019
Quarterly Validation Report of the Sentinel-5 Precursor Operational Data Products #03: July 2018 – May 2019