I showed up in January and before I built up any SP I would have negative bandwidth almost daily, even after barely posting or upvoting. For a new user trying to acclimate here, running into bandwidth issues is a deal-breaker, especially since most likely don't even know that bandwidth is a thing or how it works.
This all falls under tricky math so it's awesome you put this together to track the data and make it way more understandable. Hopefully this drives further insights that can be used to solve the bandwidth issues.
It was a rough period for all minnows.