Do people have basements? Radon?
Given that lung cancer is driven by a) smoking, then b) radon, one would expect some level of correlation here.
So, no, don't believe your map.
Then the map doesn't show risk of radon. It's worthless for that purpose.
"Different political institutions have different standards for what is a radon risk."
It's a map of different political institutions then. That's fine. Just don't try to sell a map of political institutions as a map of radon risk when that is obvious bullshit. I mean it's completely obvious from the boundary.
100% obvious bullshit.
I installed some a month or two ago, and they caught alarmingly high radon levels in my basement that I’m now working to address. But also they catch more mundane things, like “oh, I tend to get headaches in the afternoon, which happens to be when the co2 levels are super high in my office”.