Radioactivity level by prefecture

Hokkaido



Aomori



Iwate



Akita



Yamagata




Ibaraki



Tochigi



Gunma



Saitama



Chiba



Tokyo



kanagawa



Niigata



Toyama



Ishikawa



Fukui



Yamanashi



Nagano




Gifu



Shizuoka



Aichi



Mie



Shiga



Kyoto



Osaka



Hyogo



Nara



Wakayama



Tottori



Shimane



Okayama




Hiroshima



Yamaguchi



Tokushima



Kagawa



Ehime



Kochi



Fukuoka



Saga



Nagasaki



Kumamoto



Oita



Miyazaki



Kagoshima




Okinawa



Monitoring results documents

Source