Radiation readings at the disaster-hit nuclear plant have consistently followed a downward path through Friday morning, according to data taken roughly 1 kilometer west of the plant's No. 2 reactor, but plant operator Tokyo Electric Power Co. stopped short of calling the move a trend.
The radiation level at 11 a.m. dropped to 265.0 microsievert per hour from 351.4 microsievert per hour at 12 a.m. Thursday. It measured 292.2 microsievert per hour at 8 p.m. Thursday, shortly after SDF trucks sprayed water at the No. 3 reactor pool as part of efforts to avert any massive emission of radioactive materials into the air from the facility.
It also fell below 0.1 microsievert per hour to levels below those seen before the crisis in the Kanto region surrounding Tokyo, except in Tochigi, Gunma and Saitama prefectures that still measured higher figures and Miyagi from which no data were reported, the education ministry said.
Edano said radiation amounts near the Fukushima Daiichi plant ''do not pose immediate adverse effects on the human body,'' after the government's Nuclear and Industrial Safety Agency released data collected by Tokyo Electric, or TEPCO.
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