* In five and a quarter hours it accrued 4 digits, which I calculated out at 1.285 micros per hour, most of that time having been spent in the relative protection of Mr. Shigihara’s house or car or else the decontaminated community center. Between 11:27 and 12:37, when we might have been outdoors for nearly half that time, the dosimeter turned over 2 micros; hence my approximation of the real air dose in Nagadoro would be 4 micros an hour.