Try a Pivot Table. Select the range of data and go to (in
XL2003) Data PivotTable and PivotChart Report.
Click "Next" twice and then click the "Layout" button.
From here, drag the date field to the ROW area, the room
field to the COLUMN area, and time in to the DATA area.
Double-click on the time in field and change it to Min.
Click OK and Finish. Note that you'll probably have to re-
format the time values as time, which you can do in the
Pivot Table or afterward. Also, I'm assuming you don't
have more than around 250 rooms. If so, put the room
field in the ROW area under date. To learn more about
Pivot Tables, see:

http://www.cpearson.com/excel/pivots.htm
http://it.fuqua.duke.edu/public/2001...leIntroduction
..pdf
http://edferrero.m6.net/Pivot20031.html

HTH
Jason
Atlanta, GA

-----Original Message-----
Hello everybody,

I have a data that is like this:

Date Room Time In
1 1 7:30 am
1 1 10:30 am
1 2 8:30 am
1 2 1:10 pm
2 1 8:30 am
2 1 6:40 am
2 1 9:45 pm
etc

can i have the minimum of every date AND room?, i.e.
have a set of
minimums for each room and each room?
I am interested in knowing the starting times
throughouth a month for
all rooms.

regards

.