Does it?

How should the OP use that chart to determine how many sieverts he picked up from the -iums that snuck onto the plane when he was flying around the Tokyo area? Was his dosage in the order of an "airplane flight from NYC to LA"? (tens of micro-sieverts, according to that chart) Or was it in the order of the flights that russian helicopter pilots made around the burning Chernobyl reactor? (perhaps tens of sieverts)

Did deadly -iums sneak onto his plane during the flight? Could some murderous, heavy -iums have been carried up into the plane by the fire from the stored-fuel pools? And if so, would they have stayed in their ticketed cabin?

This is giving me an upset stomach. I wish there were something I could do about it but I daren't touch the immodium.