I have the following example - date & time, value
01.01.2013 22:02:02.157 1.32068
01.01.2013 22:02:15.028 1.3207
01.01.2013 22:03:01.673 1.3205
01.01.2013 22:03:01.732 1.32044
01.01.2013 22:03:01.792 1.32043
01.01.2013 22:03:02.092 1.32075
01.01.2013 22:03:02.397 1.32075
01.01.2013 22:03:07.233 1.32056
01.01.2013 22:03:14.262 1.32056
01.01.2013 22:03:14.582 1.32053
01.01.2013 22:05:11.892 1.32062
01.01.2013 22:05:12.546 1.32062
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I wish to produce a second sheet like.....
01.01.2013 22:02 value1
01.01.2013 22:03 value2
01.01.2013 22:05 value3

where values1, 2 and 3 are the average of all the values from 22:02, 22:03 and 22:05

Any suggestions on a logical way to approach this problem?