.33 mSv? That sounds quite high to me, where did you find this reading?
.33 mSv in 5 hours (milliSievert) equals 0.066 mSv/hr = 66 uSv/h (microSievert) which is about 10 to 12h of flight time at FL380 or so if we assume somewhat between 5.5 and 6.6 uSv/h ..
correct me if I have a maths failure here...
(P.S. I just did another google search and the highest reported radiation level I found for Tokyo was the 0.809 uSv/h on the 15th, which I quoted before)
Last edited by freightdog188; 21st Mar 2011 at 15:33.