The welder performance test report should report the range of the thickness qualified for each process used. If it doesn't, the test report is incorrect and should be rejected.

The long and short of the matter is that if no one witnessed the qualification test and no one recorded the thickness of the actual deposit, shame on them. Call for a new welder qualification test.  

This also holds true if only one welding process is used, but two or more F numbers were involved as well.

Qualifying a WPS or a welder is a lot like sex. You have to participate to get the full value.

Al