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Max/Min per item from a changing list
I am pulling in a DIR text file daily. This gives me
a=date, b=time, c=filesize, d=filename each day there are a different number of entries, 10-40, some days none. I want to calculate the thru-put of the file creations. On the 20th, the first file was made at 8am and the last was 5pm, sum of the file sizes is 1800. So 9 hours made 1800 = 200 per hour. sumif(a:a,a2,b:b) gets me the filesize based on date. How do I get the max/min time for a date to find my time difference complete the formula? The goal is when I add more data tomorrow, I just copy the formula down or have it already there. |
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