Radon record

This is my highest result yet, still waiting on the charcoal test from the lab to verify.
Has anyone else gotten higher readings?

Where was the test done?

had 951 when I lived in Colorado, with two separate monitors

Maryland levels can get up toward the low 100’s near the Pa. line.

Pa. has serious issues with radon.
I spoke to a Pa. radon official last Spring, end of the conversation I asked him
what was the highest level they ever recorded.