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# Given value in column A, find min/max in column B in EXCEL

Questions:

I’ve got a column of bus stop ID numbers (Column A) and Column B are various timings of which each value is the time a person boards/alights the bus. In order to know how long the bus is stopped, I want to find the difference between the max/min in Column B given a certain value of A.

``````84009   9:17:38 AM
84009   9:17:40 AM
84009   9:17:41 AM
84009   9:17:43 AM
84009   9:17:50 AM
84009   9:17:55 AM
84029   9:22:47 AM
84029   9:22:47 AM
84029   9:22:49 AM
84029   9:22:50 AM
84019   9:23:49 AM
83049   9:28:19 AM
82069   9:32:32 AM
82069   9:32:49 AM
82049   9:33:58 AM
82049   9:33:58 AM
82049   9:33:59 AM
82049   9:34:02 AM
82049   9:34:10 AM
82029   9:35:13 AM
``````

So the first 7 rows should print 00:00:17, the next 4 is 00:00:04 etc. since they are of the same A value. Is this possible? Feel like its getting close but not quite. Thanks a million.
Any help would be greatly appreciated

``````=MAX(IF(A1:A6=1889,B1:B6))-MIN(IF(A1:A6=1889,B1:B6))