windows server 2008 r2 - performance monitor

Hi,

I have logged data via performance monitor for a week on the win2k8 r2 server.

Is there an easy way to interrupt the data? For example, I want to know what the average cpu time was for 9am to 12pm, 12pm to 3pm, and 3pm to 6pm.

I have 3 times that I want and I have 7 days of data. Currently I have to manually select the time 3 times x 7 days. I have to do this 21 times. It's very time consuming.

Is there a better way?

Thanks