Hello Matt,
I agree with pb71, I had trouble opening your sheet, best to post a version on here. I'm not sure what the issue is, pb71's suggestion will ignore the intermediate columns.......is it that they aren't every other column....are they evenly spaced?
pb71,
Don't believe you need ISNUMBER in any version [of excel], shorter version works fine....
regards, daddylonglegs
Bookmarks