I am new to PERL and I am not a regular programmer. I need help in trying to sum, and also find averages. I have data as shown below 0 4/2/2007 6:00:15 21615 62 2 2 4 1 4/2/2007 6:00:55 21655 60 2 2 4 2 4/2/2007 6:01:15 21675 65 20 3 4 3 4/2/2007 6:02:15 21735 65 20 3 4 4 4/3/2007 6:00:00 21600 65 20 3 4 5 4/3/2007 6:00:15 21615 62 2 2 4 6 4/3/2007 6:00:55 21655 60 2 2 4 7 4/3/2007 6:02:15 21735 65 20 3 4 Cols 2, 3, and 4 are Date, time (in hours) and time (in seconds. The result I want is the sum (col 6) and average (cols 5 and 7) for 2 minute intervals by day. The result should look like ... 0 4/2/2007 6:00:00 62.33 8 2.33 1 4/2/2007 6:02:15 65 20 3 2 4/3/2007 6:00:00 62.33 8 2.33 3 4/3/2007 6:02:15 65 20 3 Thanks in advance to anyone who can help me with this...

In reply to Summing Lines by Bavie

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