On 16 Oct., 2011, I measured radiation in MIZUMOTO PARK, in Katsushika ward, Tokyo, Japan. The monitoring place is only 15 km from the center of Tokyo, 220 km from Fukushima Daiichi Nuclear power plant.
The monitor indicates 0.29 or 0.30 micro Sievert per hour in air at chest hight, 3.60 micro Sievert per hour at ground level, on roadside mud.
Measuring instrument is made of Ukraine, ECOTEST MKS-05.