What does this report tell me?
The Total Outgoing Traffic Report displays an hourly/daily summary of the total bytes of outbound Internet traffic which Total Traffic Control processed.

• Time - This column shows the hour on a single-day report or the day in a multi-day report. Click on the Time link to view a detailed report of computers generating the outgoing traffic.
• Bytes In - This column shows the total number of outbound bytes processed by TTC.

Total Outgoing Traffic Report - online Help

Traffic Classification Object (C and R) - online Help