Contamination as perceived by people in Tohoku: Fukushima and part of neighboring prefectures. This is very close to what is being reported in the mainstream media, by the way.
Contamination as perceived by people in Kanto: almost entire Tohoku and northern Kanto.
Contamination as perceived by people in Hokkaido: almost entire Tohoku, Kanto, and Chubu. It stops right about Lake Biwa.
Contamination as perceived by people in Kansai: entire Kanto and Tohoku, half of Chubu, and 2/3 of Hokkaido.
Contamination as perceived by people in Okinawa: almost entire Japan except for Kyushu and part of Shikoku and Chugoku.
Contamination as perceived by people outside Japan: entire Japan
Contamination as perceived by Japanese politicians: area around Fukushima I Nuclear Power Plant.
Contamination as perceived by people at TEPCO:
