Hi!

I have a spreadsheet filled with data that includes date and time. For a particular value in column a i need to find the max and min time.

My sheet looks a little like this

Column a columnb
1234 2/01/2013
1234 3/01/2013
1234 3/01/2013
1234 4/01/2013
1234 5/01/2013
1234 6/01/2013
5678 1/01/2012
5678 2/01/2012
5678 3/01/2012
5678 4/01/2012

So I need to find the max and min dates for the values 1234 and 5678 etc,.

Please help!
Thanks!