So Dinosaurs had feathers. Now I can't help but imagine a velociraptor with yellow baby chick down feathers.

This is actually a pretty cool thing. I would like to see a slider to adjust the minimum magnitude value to display though.

This, combined with ads can explain higher than expected bandwidth use, but it will not account for a discrepancy between what your router reports and what AT&T reports. The router sees all the traffic. If my internet was being metered, I would be quite outraged if my usage reported by my provider was significantly different than my usages reported by my ddwrt.