Well, assuming the average stream is about 2.5mbit/s, 10 hours per day that is roughly 10GB per day. So around 300GB per month...

I watch between 8-10 hours per day.

I did a test, monitored my useage while watching tv, and found that I use about 250-350 mb per hour.

Quite a bit less then that chart shows.

I have upped my service to unlimited from 350 gig a month but have noticed that i have never broken the 250 mark and i use it exclusively