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Exposure data wrong for 16,000 in Fukushima via The Japan Times

FUKUSHIMA – Fukushima Prefecture and the National Institute of Radiological Sciences have said they erroneously estimated the radiation exposure of 16,118 people in a survey covering the first four months after the outbreak of the March 2011 disaster at the Fukushima No. 1 nuclear plant.

Among the roughly 420,000 people authorities have so far finished compiling data on, recalculations show 12,469 received higher doses and 3,649 lower doses than previously estimated.

The margins for revisions range from plus 0.4 millisievert to minus 0.2 millisievert. As a result of the revisions, it was learned that some people were exposed to more than 1 millisievert — the annual limit set by the government for ordinary citizens.

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