To sum by month, you can use a formula based on the SUMIFS function. in column E you have to go to extra trouble to create dates you can use for criteria.A pivot table is an excellent solution when you need to summarize data by year, month, quarter .if there is one for weekly , it will be great.Thanks for sharing excellent informations. Your web-site is so cool. I’m impressed by the details that you have on this web site. It reveals how nicely you understand this subject. Bookmarked this website page, will come back for more articles. I found some good resources to the websites here.I am a writer at
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