Dose received from air travel?

["David L. Wannigman" <DWannigman@lanl.gov>]

I need to know a "reasonable" value to quote as the dose received by a 
passenger on a "typical" airplane flight.  Can anyone in Radsafe land help?

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David Wannigman
Los Alamos National Lab
e-mail:  dwannigman@lanl.gov
Phone:  (505) 667-0980
Fax:  (505) 667-1009