These examples should get you started. MRTG MRTG is used to monitor bandwidth throughout the day and it graphically archives the data over a period of a day, week, month, and year. This data can be backed up each week and stored to either removable media or on a remote server. This command only had to be run once. Interpreting MRTG MRTG graphs show the max output for the time periods displayed.
Time is in military time.
As a quick reminder, if the time is 13 to 23 subtract 12 from that number to get the standard time. Each line on the y-axis represents one hour. High spikes indicate a large amount of traffic being sent or received. The example above shows a high traffic spike. Notice how it distorts the normal looking traffic just above the x-axis.