12 months average

[hanif]

Hi All,

Please see attached. I have a 2 years of data (B4:C15 and B19:C30). I would like to get a 12 month average from a selected month for example if the dropdown list (F3) is showing Apr the average values from Apr 20 to Mar 21 (as shown in the example in cell F5).

Could you please help me the right formula so when I change the dropdown list to another month it gives the result of the average value for the next 12 month.

Thanks