Hi
Please can you help me .
My spreadsheet is like this (please see the attached) :
1. Column A : Dates ( Every day's Date ) :
2. Column B : Data numbers (daily value)
3. Column C: Month code
4. Column D: Season
3. Column E : Is where I want the formula to be: (sum only values in every winter season)
The formula must look at column D and add up the corresponding data in column B and give me column E for example.
So basically I need to get a sum only winter season from C2 and so on.
Thanks for your time and help.
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