Data Dashboard

Hey everyone. I'm struggling to build a dashboard and am looking for some assistance. I've attached a copy of the data I'm working from. What I'm trying to do is show monthly performance based on products of a few different areas. Where I'm running into problems, is with the month listings. If the report shows one month at a time, I can get it to work with SUMIF formulas, however when there is more than one (and there will always be three), I can't figure it out.

Any help would be appreciated.

~B



Excel Forum Sample File.xlsx