How to read the bandwidth graph?

One of our early Alpha users gave us this idea. 

Can we track the internet usage and let people know how much bandwidth they are using?

He got into one situation where his internet provides limit monthly usage to 1Terabyte (1000 Gigabytes) of data per month.  If he goes over, he had to pay more. 

Well, we got all the data inside that little box,  so here is the graph

This little thing tells you the internet usage throughout the day.  And as well as aggregated bandwidth in the last 24 hours.

Here, the most important number is the 15.68GB total usage.   So in a 30 day month, in theory, I will use about 450GB.  (less than half of the bandwidth I am charged for).

True story: one of our early users canceled his expensive internet and move to a lower tier after seen the graph.

For example, if you are paying for 300Mbits, this means you can stream around 12 4K videos from Netflix at the same time.   And if you do that, you will consume 3T bandwidth in one day.  

In the case above, my average bandwidth usage throughout the day is 1.45Mbits.  And during noon time, my bandwidth is 6Mbits (average).