At the moment, that number is updated every 15 minutes, but we’re working with carriers to try to get it more often. (That may not happen for a few months)
As far as I know, it includes all bytes transferred and nothing should be excluded.
We’re hoping to get some cool graphs up there in the next few weeks.
BTW, you can get some more detailed usage stats via our API. This endpoint is still undergoing some development and so might change, but requesting https://dashboard.konekt.io/api/1/usage will show each individual session for your account.
You can do some filtering on that with some parameters in the URL.
For example to filter on link ID #2: usage?linkids[]=2
To aggregate results monthly: usage?aggregate=month
daily: usage?aggregate=day
hourly: usage?aggregate=hour
specific billing period: usage?aggregate=billing