alt Hacker NewsReading up on this more, it seems to be based on stadium/venue capacity, which means any possible TFRs are at a limited number of areas for very specific series, for which there is data available [1]
The TFR in TFA appears to be much more ambiguous than this. I'm not sure they're really comparable.
https://adds-faa.opendata.arcgis.com/datasets/faa::stadiums/...
Ha!
Which specific series? Why do i need to know when sportsball happens, any variety of it? Oh, and concerts too. Why do i need to know when taylor swift is in town?
Nope, it is not nearly that simple, and consequences can be dire.