I have a column of model numbers in which I need to have a cell with the
totals of all the different models being built within a certain date range.
Date model# model # 11 12 13
01-may 12 totals 2 3 2
(btwn 01may-09may)
02-may 11
03-may 11
04-may 13

07-may 12
08-may 12
09-may 13