Hi,

I was talking about the estimated absorbed dose. Things like how much REM/year for an light shielded craft. Sorry if I wasnt clear enough.

I the meanime, I found some texts on internet that say something about those levels. They match with the 0.3 - 1 Sievert/year that the first text talks about. It seems that galactic cosmic rays are the only thing that matters if there is no SPE taking place.