Cosmic ray background in Denver

["John Moulder" <jmoulder@post.its.mcw.edu>]

Not a trivia contest, but I urgently need to know what the cosmic ray 
background is in Denver.

Im looking at a statement that comic background averages 20 mrem/yr in the US, 
but is 50 mrem/yr in Denver.  I know that the 20 mrem/yr average is a bit low, 
30 mrem/yr would be closer, but what about the Denver figure?

Please reply by e-mail, as I get radsafe by digest, which is handy but delays 
replies.


John Moulder (jmoulder@its.mcw.edu)