You are correct that the -3B2 is the 20k thrust variant.
A representative data set compiled at random.
You can take a pure average of these numbers or select conditions that best suit what you are trying to model. I thought it might be more fun for you to have some data to play with rather than a parameter.
As far as idle speed.... Different "idles" exist depending on conditions.
Are you looking for a (CRZ) flight idle speed?