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Message: [QUOTE="downhillsheep, post: 7418811"] Ok, I'm sure this is pretty easy to figure out but this has been buggin me for a while. If you look at the list below, I have twelve months of data of variou amounts. What I would like to do is to report ZERO for Jan as the amoun if less than 0.5; report ZERO for Feb as the total of Jan and Feb i still less than 0.5. However, for Mar I'd like to report 0.7 as that i the total of Jan, Feb, and Mar and is over 0.5. For Apr I would like t report 1.2 as that amount is already higher than 0.5; May ZERO and Ju 1.3 and so on and so fourth Jan Feb Mar Apr May Jun Jul Data 0.2 0.1 0.4 1.2 0.3 1.0 0.2 What I'd 0.0 0.0 0.7 1.2 0.0 1.3 0.0 like to achieve I have to do this for over 10k lines of data and would love an easie way of formulating it so I know what needs to be reported on any give month Thank you so much for your hel [/QUOTE]