The background radiation level in my Pittsburgh office is currently micro-roentgens per hour.
That's equivalent to about chest X-rays per year.
Readout updated:
[About our Radiation Monitor]
[return to the book]
Chart updated:
Note.--The variation above is because the monitor was moved from a second floor to a basement and then later to a fifth floor office all within about a quarter of a mile area. It's good to be above the radon gas. The "data fallout" was due to corrosion on a badly set pin in the serial connector. Write me if you want to play with this data.