=SUMIF('LAB-41-11311.01-EX'!C:C,'Data Summary'!B153,'LAB-41-11311.01-EX'!G:G)+SUMIF('LAB-41-11311.01-EX'!C:C,'Data Summary'!B154,'LAB-41-11311.01-EX'!G:G)
This is the formular so far. I now need to sum only the dates for each month and have it change for each month?
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