Cacti - http://www.cacti.net/

Exported Graphs

Graph - snaps - Traffic - v-bird
5min Polling - Daily (5 Minute Average)

1min Polling - Daily View (1 Minute Average)

5min Polling - Weekly (30 Minute Average)

1min Polling - Weekly View (5 Minute Average)

5min Polling - Monthly (2 Hour Average)

1min Polling - Monthly View (5 Minute Average)

5min Polling - Yearly (1 Day Average)

1min Polling - Yearly View (30 Minute Average)

5min Polling - 5-Yearly (5 day average)

1min Polling - 5 Yearly View (2 Hour Average)