I’ve done something like this, but also used the location of ISS to figure out which country was “getting pissed on the most” by the astronauts.
I’m fairly sure I got a working script somewhere for the data, but unfortunately never got around to create a leaderboard website for it :/
It'd be fantastic to have the flag of the country last pissed on in the menu bar item.
Ie. when the tank level increased last I guess? The value doesn't always seem to just monotonically increase though, but I could be wrong – frankly I haven't paid that close attention to the value. Could also be something like microgravity causing a bit of… uh… slosh making the sensor reading slightly inaccurate, or something along those lines?
Oh well