In the SQL database you can find several CBQoS tables that will give you the information that you need:
Just try to use any of the SQL queries that can give you the peak value for the classes you want to report on.
Installation | Consultancy | Training | Licenses
I don't see any peak/max. value in any of these tables.I only see one single value in cbQoSStatsCounter table. I assume this may require some calculation to get the peak value?
Can you elaborate in more detail what your idea is?