Summary Table not Calculating Averages, and trying to color fields in the table

Ivan - Based on the information you've provided (and without me knowing a lot about your end goal) it sounds like you may need to revisit your approach. I'm guessing that a single Service Call could have many Punch List Items. If this is indeed the case, you would need to setup a relationship between these two tables and then do a Summary field from Punch List Items to Service Calls. You can then build a Summary Report on the Service Calls table to see the information you're looking for.