Reports - data from specific hours each day?

Hi

I am wondering if it's possible to create a report that graphs the interface/device data from specific time window, every day? And put that all into one report?

For example we'd like to see a report for the past week, of how busy the network interface was during certain hours of the morning. Is this possible with ONE report, that has data for the whole past week?

Thanks

(Hopefully this is the right forum area)