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Seven regions in Fukushima prefecture and radioactivity measurements taken on March 18, 2011*. From the right side on the map: SS: Soso, IW: Iwaki, KP: Kenpoku, KC: Kenchu, KN: Kennan, AZ: Aizu, MAZ: Minamiaizu. * Radioactivity measurements were originally published in Nagata et al. [7], reproduced with publisher permission (License Number 3365080379769).
