Integrate the two tables into a new table, and finally add a column of average values.
@DDYY
Is this your assignment? 😁lets get you started.Based on your results., you are looking at the difference between Year 2017 and 1997 actually, not the average.
Hi @DDYY, you can integrate the two tables using the Join tool (something like the screenshot below), and then introduce a formula tool downstream to compute the avg.