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| < Vmax | < 10 * Vmax | < 100 * Vmax | > 100 * Vmax |
| Stations: 357 | Date UTC | Radiation μGy/h |
Vmin ~ Vmax μGy/h |
| Kurahashi Maizuru City | 2015-03-31 02:50 | 0.048 | 0.036~0.093333 |
| Shiokumi Maizuru City | 2015-03-31 02:50 | 0.036 | 0.021~0.168667 |
| Oitomi Ayabe City | 2015-03-31 02:50 | 0.044 | 0.024~0.1175 |
| Okayasu Maizuru City | 2015-03-31 02:50 | 0.037 | 0.025333~0.1115 |
| Oyama Maizuru City | 2015-03-31 02:50 | 0.032 | 0.019~0.097667 |
| Kijiyama Misasa Town | 2015-03-31 02:50 | 0.049 | 0.0145~0.0925 |
| Takasimamati | 2015-03-31 02:50 | 0.024 | 0.01725~0.074333 |
| Kichisaka Maizuru City | 2015-03-31 02:50 | 0.037 | 0.022667~0.1355 |
| Radiation dose at JAEA Oarai (P12) | 2014-04-29 06:50 | 0.048 | 0.114 (Japan mean) |
| Sakuragaike community hall Omaezaki City | 2013-05-31 06:00 | 0.045 | 0.07~0.120833 |
| Satsuma-sendai monitoring center Satsuma-sendai City | 2013-05-31 06:00 | 0.043 | 0.039167~0.0875 |
| Isobe Hitachiota City | 2013-05-31 06:00 | 0.059 | 0.042~0.346 |
| Hukada-kita Matsue City | 2013-05-31 06:00 | 0.028 | 0.019~0.081833 |
| Chikagawa Mutu City | 2013-05-31 06:00 | 0.023 | 0.013833~0.076833 |
| Tasaki Hokota City | 2013-05-31 06:00 | 0.068 | 0.032167~0.066167 |
| Yatabe Ibaraki Town | 2013-05-31 06:00 | 0.062 | 0.036~0.060167 |
| Omaezaki City monitoring center | 2013-05-31 06:00 | 0.038 | 0.074~0.1235 |
| Takae Satsuma-sendai City | 2013-05-31 06:00 | 0.032 | 0.026~0.077333 |
| Futatsunuma Hirono Town | 2013-05-31 06:00 | 0.195 | 0.036333~0.1 |
| Tsuchikawa Nanao City | 2013-05-31 06:00 | 0.039 | 0.025~0.108833 |
| Kataku Matsue City | 2013-05-31 06:00 | 0.043 | 0.036833~0.088833 |
| Odanosawa Higashidoori Village | 2013-05-31 06:00 | 0.016 | 0.0145~0.0745 |
| Onuki Oarai Town | 2013-05-31 06:00 | 0.070 | 0.033~0.081167 |
| Daitou branch Kakegawa City | 2013-05-31 06:00 | 0.039 | 0.0495~0.120667 |
| Minato Satsuma-sendai City | 2013-05-31 06:00 | 0.034 | 0.0264~0.070833 |
| Matsudate Naraha Town | 2013-05-31 06:00 | 0.741 | 0.035~0.104333 |
| Kashiwazaki-shigai Kashiwazaki City | 2013-05-31 06:00 | 0.042 | 0.026333~0.0935 |
| Izumisano municipal Hineno primary scool Station | 2013-05-31 06:00 | 0.042 | 0.041~0.080167 |
| Minami-Horoni Kyowa Town | 2013-05-31 06:00 | 0.036 | 0.016333~0.099833 |
| Ishikawa Mito City | 2013-05-31 06:00 | 0.066 | 0.044~0.071667 |
| Hitsuhama Ohi Town | 2013-05-31 06:00 | 0.029 | 0.028167~0.091167 |
| Hirao Genkai Town | 2013-05-31 06:00 | 0.030 | 0.027833~0.162333 |
| Tomioka Tomioka Town | 2013-05-31 06:00 | 2.535 | 0.034667~0.098333 |
| Osaka prefectural Hineno high scool Station | 2013-05-31 06:00 | 0.035 | 0.035167~0.089 |
| Horikappu Jinja Tomari Village | 2013-05-31 06:00 | 0.031 | 0.013~0.103333 |
| Ajigaura Hitachinaka City | 2013-05-31 06:00 | 0.070 | 0.0425~0.073333 |
| Anojiri Obama City | 2013-05-31 06:00 | 0.029 | 0.02075~0.08 |
| Hokawaduura Genkai Town | 2013-05-31 06:00 | 0.034 | 0.031~0.11775 |
| Ono Okuma Town | 2013-05-31 06:00 | 3.408 | 0.037~0.088333 |
| Shimo-Takamachi Kariwa Village | 2013-05-31 06:00 | 0.040 | 0.019~0.108667 |
| Atom-kyoudou nursery school Station | 2013-05-31 06:00 | 0.051 | 0.053833~0.1005 |
| Kayanuma Tomari Village | 2013-05-31 06:00 | 0.033 | 0.014167~0.0955 |
| Godai Naka City | 2013-05-31 06:00 | 0.053 | 0.033333~0.060833 |
| Kounoura Takahama Town | 2013-05-31 06:00 | 0.029 | 0.020333~0.084333 |
| Toyonoura Ikata Town | 2013-05-31 06:00 | 0.012 | 0.0105~0.0595 |
| Shinzan Futaba Town | 2013-05-31 06:00 | 4.226 | 0.037167~0.080167 |
| Hairando Yokosuka City | 2013-05-31 06:00 | 0.039 | 0.022333~0.07 |
| Kumatori Town office Station | 2013-05-31 06:00 | 0.036 | 0.039333~0.076167 |
| Sugaya Naka City | 2013-05-31 06:00 | 0.083 | 0.042167~0.107667 |
| Takenami Mihama Town | 2013-05-31 06:00 | 0.070 | 0.0424~0.116333 |
| Kuchogoshi Ikata Town | 2013-05-31 06:00 | 0.018 | 0.015~0.057667 |
| Kiyohashi Namie Town | 2013-05-31 06:00 | 0.289 | 0.035333~0.073833 |
| Kurihama Yokosuka City | 2013-05-31 06:00 | 0.035 | 0.0245~0.066833 |
| North point of Kinki University Atomic Energy Research Instirute Station | 2013-05-31 06:00 | 0.049 | 0.055167~0.077667 |
| Kadobe Naka City | 2013-05-31 06:00 | 0.053 | 0.034833~0.149667 |
| Shiraki pass Tsuruga City | 2013-05-31 06:00 | 0.078 | 0.0336~0.139833 |
| Ikatagoshi Ikata Town | 2013-05-31 06:00 | 0.019 | 0.017333~0.056833 |
| Onagawa Onagawa Town | 2013-05-31 06:00 | 0.071 | 0.01~0.024 |
| Hinode Town Yokosuka City | 2013-05-31 06:00 | 0.034 | 0.026667~0.044 |
| Muramatsu Tokai Village | 2013-05-31 06:00 | 0.073 | 0.044333~0.075167 |
| Tateishi Tsuruga City | 2013-05-31 06:00 | 0.069 | 0.0414~0.092167 |
| Ningyotoge Kagamino Town | 2013-05-31 06:00 | 0.062 | 0.018667~0.099333 |
| Touhoku Branch office Touhoku Town | 2013-05-31 06:00 | 0.017 | 0.011~0.053833 |
| Shiohama Kawasaki Ward | 2013-05-31 06:00 | 0.049 | 0.038333~0.074667 |
| Shinkango Omaezaki City | 2013-05-31 06:00 | 0.036 | 0.074~0.1335 |
| Toyooka Tokai Village | 2013-05-31 06:00 | 0.073 | 0.0465~0.0745 |
| Shika Shika Town | 2013-05-31 06:00 | 0.047 | 0.031167~0.119333 |
| Nishi-hamasada Matsue City | 2013-05-31 06:00 | 0.047 | 0.027667~0.111167 |
| Momiyama Hokota City | 2013-05-31 06:00 | 0.073 | 0.037167~0.088167 |
| Shirasuna Omaezaki City | 2013-05-31 06:00 | 0.035 | 0.066~0.119167 |
| Onuma Hitachi City | 2013-05-31 06:00 | 0.076 | 0.0365~0.065667 |
| Noumi Shika Town | 2013-05-31 06:00 | 0.051 | 0.0285~0.123833 |
| Koura Matsue City | 2013-05-31 06:00 | 0.041 | 0.036167~0.105833 |
| Tomari Rokkasho Village | 2013-05-31 06:00 | 0.021 | 0.013833~0.104 |
| Araji Hokota City | 2013-05-31 06:00 | 0.075 | 0.0425~0.074333 |
| Sakurasan Ward Omaezaki City | 2013-05-31 06:00 | 0.038 | 0.063~0.115333 |
| Ueno Satsuma-sendai City | 2013-05-31 06:00 | 0.035 | 0.032~0.076333 |
| Mayumi Hitachiota City | 2013-05-31 06:00 | 0.053 | 0.035833~0.063167 |
| Otsu Nanao City | 2013-05-31 06:00 | 0.041 | 0.030333~0.098333 |
| Mitsu Matsue City | 2013-05-31 06:00 | 0.041 | 0.03~0.088667 |
| Yokohama Town Office Yokohama Town | 2013-05-31 06:00 | 0.023 | 0.01725~0.094167 |
| Tsukuriya Hokota City | 2013-05-31 06:00 | 0.089 | 0.039833~0.074167 |
| Nemoto Hitachioomiya City | 2013-05-31 06:00 | 0.080 | 0.037~0.082667 |
| Hamaokakita primary school Omaezaki City | 2013-05-31 06:00 | 0.041 | 0.069833~0.1225 |
| Kodaira Satsuma-sendai City | 2013-05-31 06:00 | 0.032 | 0.029~0.071667 |
| Yamadaoka Naraha Town | 2013-05-31 06:00 | 0.222 | 0.038167~0.088667 |
| Power Station- | 2013-05-31 06:00 | 0.034 | 0.014~0.1085 |
| Owashi Matsue City | 2013-05-31 06:00 | 0.037 | 0.0325~0.094667 |
| Sunagomata Higashidoori Village | 2013-05-31 06:00 | 0.022 | 0.011~0.0935 |
| Yoshizawa Mito City | 2013-05-31 06:00 | 0.051 | 0.039167~0.063667 |
| Ogasa branch Kikugawa City | 2013-05-31 06:00 | 0.043 | 0.075167~0.123333 |
| Kyoudomarisaki Karatsu City | 2013-05-31 06:00 | 0.029 | 0.026~0.165 |
| Shimo-Kooriyama Tomioka Town | 2013-05-31 06:00 | 1.212 | 0.035833~0.097667 |
| Doai Kashiwazaki City | 2013-05-31 06:00 | 0.039 | 0.0195~0.0955 |
| Osaka prefectural Sano supporting school Station | 2013-05-31 06:00 | 0.038 | 0.0345~0.097 |
| Hattari Kyowa Town | 2013-05-31 06:00 | 0.037 | 0.017~0.112333 |
| Horiguchi Hitachinaka City | 2013-05-31 06:00 | 0.079 | 0.036667~0.077 |
| Obama Obama City | 2013-05-31 06:00 | 0.038 | 0.0336~0.0835 |
| Sakibe Karatsu City | 2013-05-31 06:00 | 0.031 | 0.028~0.154 |
| Yonomori Tomioka Town | 2013-05-31 06:00 | 3.066 | 0.036333~0.091333 |
| Nishiyama Kashiwazaki City | 2013-05-31 06:00 | 0.040 | 0.016833~0.132333 |
| Kumatori town Minami primary school Station | 2013-05-31 06:00 | 0.048 | 0.048167~0.1065 |
| Herokaruusu Tomari Village | 2013-05-31 06:00 | 0.034 | 0.009~0.107167 |
| Mawatari Hitachinaka City | 2013-05-31 06:00 | 0.073 | 0.044833~0.078167 |
| Ogurui Takahama Town | 2013-05-31 06:00 | 0.040 | 0.028833~0.087333 |
| Kashu Ikata Town | 2013-05-31 06:00 | 0.024 | 0.022667~0.069833 |
| Yamada Futaba Town | 2013-05-31 06:00 | 16.230 | 0.038~0.095667 |
| Kariwa Kariwa Village | 2013-05-31 06:00 | 0.037 | 0.019~0.105167 |
| Kumatori town Nishi primary school Station | 2013-05-31 06:00 | 0.051 | 0.052333~0.092833 |
| Kamoenai Kamoenai Village | 2013-05-31 06:00 | 0.032 | 0.013~0.0905 |
| Sawa Hitachinaka City | 2013-05-31 06:00 | 0.063 | 0.032333~0.061333 |
| Otomi Takahama Town | 2013-05-31 06:00 | 0.044 | 0.035~0.098 |
| Taisei Ikata Town | 2013-05-31 06:00 | 0.022 | 0.02~0.045167 |
| kami-Hatori Futaba Town | 2013-05-31 06:00 | 1.606 | 0.034~0.086833 |
| Nagasawa Yokosuka City | 2013-05-31 06:00 | 0.038 | 0.031~0.065333 |
| The athletic field Station of Kinki University | 2013-05-31 06:00 | 0.038 | 0.0395~0.073833 |
| Kounosu Naka City | 2013-05-31 06:00 | 0.048 | 0.025667~0.055 |
| Nyuu Mihama Town | 2013-05-31 06:00 | 0.061 | 0.0344~0.106 |
| Kawanagata Ikata Town | 2013-05-31 06:00 | 0.024 | 0.02~0.060167 |
| Yoriiso Ishinomaki City | 2013-05-31 06:00 | 0.086 | 0.012~0.027167 |
| Funagura Yokosuka City | 2013-05-31 06:00 | 0.039 | 0.029~0.066 |
| Nukada Naka City | 2013-05-31 06:00 | 0.056 | 0.037833~0.066 |
| Shiraki Tsuruga City | 2013-05-31 06:00 | 0.078 | 0.0376~0.1335 |
| Ten-no Kagamino Town | 2013-05-31 06:00 | 0.056 | 0.022333~0.119 |
| Misawa City hall Misawa City | 2013-05-31 06:00 | 0.021 | 0.017~0.1335 |
| Chidori Kawasaki Ward | 2013-05-31 06:00 | 0.036 | 0.02~0.063833 |
| Oshinobe Tokai Village | 2013-05-31 06:00 | 0.060 | 0.040833~0.070167 |
| Kouno Minami-Echizen Town | 2013-05-31 06:00 | 0.046 | 0.0344~0.084 |
| Aomori Aomori City | 2013-05-31 06:00 | 0.027 | 0.014~0.068833 |
| Oshima Kawasaki Ward | 2013-05-31 06:00 | 0.045 | 0.032667~0.071167 |
| Hiraba Omaezaki City | 2013-05-31 06:00 | 0.034 | 0.0395~0.119167 |
| Ishigami Tokai Village | 2013-05-31 06:00 | 0.073 | 0.042167~0.067667 |
| Akasumi Shika Town | 2013-05-31 06:00 | 0.047 | 0.04~0.1025 |
| Sadahongou Matsue City | 2013-05-31 06:00 | 0.030 | 0.021~0.0995 |
| Chitose-daira Rokkasho Village | 2013-05-31 06:00 | 0.023 | 0.014~0.066667 |
| Tokushuku Hokota City | 2013-05-31 06:00 | 0.065 | 0.032667~0.055667 |
| Kusabue Omaezaki City | 2013-05-31 06:00 | 0.037 | 0.074167~0.125833 |
| Nemoto Hitachioomiya City | 2013-05-31 06:00 | 0.048 | 0.032833~0.071167 |
| Fukura Shika Town | 2013-05-31 06:00 | 0.040 | 0.0335~0.111833 |
| Kami-koubu Matsue City | 2013-05-31 06:00 | 0.037 | 0.0185~0.096833 |
| Fukkoshi Yokohama Town | 2013-05-31 06:00 | 0.023 | 0.014~0.064667 |
| Kamitoda Hokota City | 2013-05-31 06:00 | 0.065 | 0.035833~0.061667 |
| Ebisawa Ibaraki Town | 2013-05-31 06:00 | 0.067 | 0.0418~0.1922 |
| Nakamachi Omaezaki City | 2013-05-31 06:00 | 0.053 | 0.078~0.117833 |
| Yorita Satsuma-sendai City | 2013-05-31 06:00 | 0.030 | 0.026~0.083833 |
| Kume Hitachiota City | 2013-05-31 06:00 | 0.050 | 0.035833~0.061833 |
| Kazanashi Shika Town | 2013-05-31 06:00 | 0.048 | 0.041~0.112 |
| Tayu Matsue City | 2013-05-31 06:00 | 0.043 | 0.039333~0.092667 |
| Oippe Higashidoori Village | 2013-05-31 06:00 | 0.017 | 0.012333~0.064167 |
| Isohama Oarai Town | 2013-05-31 06:00 | 0.059 | 0.0375~0.070833 |
| Jitougata primary school Makinohara City | 2013-05-31 06:00 | 0.041 | 0.066167~0.114333 |
| Gumisaki Satsuma-sendai City | 2013-05-31 06:00 | 0.027 | 0.007~0.067667 |
| Shigeoka Naraha Town | 2013-05-31 06:00 | 0.543 | 0.0375~0.115333 |
| Power Station-South | 2013-05-31 06:00 | 0.036 | 0.012167~0.111167 |
| Izumisano municipal Oike athletic field Station | 2013-05-31 06:00 | 0.055 | 0.048667~0.104667 |
| Iwanai Iwanai Town | 2013-05-31 06:00 | 0.036 | 0.016833~0.1155 |
| Oba Mito City | 2013-05-31 06:00 | 0.065 | 0.039~0.2305 |
| Nagai Ohi Town | 2013-05-31 06:00 | 0.035 | 0.024167~0.098667 |
| Kami-kooriyama Tomioka Town | 2013-05-31 06:00 | 1.181 | 0.029167~0.076667 |
| Arahama Kashiwazaki City | 2013-05-31 06:00 | 0.038 | 0.0225~0.1015 |
| Izumisano municipal Hineno filtration plant Station | 2013-05-31 06:00 | 0.040 | 0.042667~0.100167 |
| The Meteorological Obsevatory of kyowa Town | 2013-05-31 06:00 | 0.035 | 0.01~0.1065 |
| Yanagisawa Hitachinaka City | 2013-05-31 06:00 | 0.066 | 0.035333~0.062833 |
| Imamura Genkai Town | 2013-05-31 06:00 | 0.028 | 0.025333~1.39833 |
| Mukaihata Okuma Town | 2013-05-31 06:00 | 4.843 | 0.0345~0.093833 |
| Kariwa Kariwa Village | 2013-05-31 06:00 | 0.038 | 0.025~0.099833 |
| Osaka prefectural Kumatori off-site-center Station | 2013-05-31 06:00 | 0.042 | 0.044333~0.092333 |
| Chatsu Tomari Village | 2013-05-31 06:00 | 0.036 | 0.0155~0.107333 |
| Hitachinaka Hitachinaka City | 2013-05-31 06:00 | 0.098 | 0.040167~0.077333 |
| Yamanaka Takahama Town | 2013-05-31 06:00 | 0.027 | 0.011~0.108833 |
| Kushi Genkai Town | 2013-05-31 06:00 | 0.031 | 0.028~0.1625 |
| Kooriyama Futaba Town | 2013-05-31 06:00 | 1.063 | 0.035~0.089333 |
| Katsuyama Kariwa Village | 2013-05-31 06:00 | 0.037 | 0.017333~0.1015 |
| Yamanotedai-No.1 Park Station | 2013-05-31 06:00 | 0.051 | 0.05~0.099333 |
| Yokobori Naka City | 2013-05-31 06:00 | 0.057 | 0.035833~0.0705 |
| Sakajiri Mihama Town | 2013-05-31 06:00 | 0.059 | 0.030667~0.123667 |
| Namie Namie Town | 2013-05-31 06:00 | 0.774 | 0.039167~0.084167 |
| Sahara Yokosuka City | 2013-05-31 06:00 | 0.038 | 0.024167~0.061833 |
| South point of Kinki University Atomic Energy Research Instirute Station | 2013-05-31 06:00 | 0.054 | 0.054333~0.0915 |
| Motokomezaki Naka City | 2013-05-31 06:00 | 0.057 | 0.029167~0.059 |
| Tsuruga Tsuruga City | 2013-05-31 06:00 | 0.057 | 0.0272~0.0935 |
| Minatoura Ikata Town | 2013-05-31 06:00 | 0.016 | 0.014~0.051833 |
| Koyadori Onagawa Town | 2013-05-31 06:00 | 0.094 | 0.017167~0.034 |
| Uraga Yokosuka City | 2013-05-31 06:00 | 0.041 | 0.024167~0.055833 |
| Higashiosaka municipal Kamikosaka primary scool Station | 2013-05-31 06:00 | 0.043 | 0.046167~0.0775 |
| Uridura Naka City | 2013-05-31 06:00 | 0.055 | 0.037667~0.063 |
| Urasoko Tsuruga City | 2013-05-31 06:00 | 0.073 | 0.0294~0.110833 |
| Akawase Kagamino Town | 2013-05-31 06:00 | 0.047 | 0.0175~0.076167 |
| Touhoku Town office Touhoku Town | 2013-05-31 06:00 | 0.017 | 0.012~0.249 |
| Nishihemi Yokosuka City | 2013-05-31 06:00 | 0.036 | 0.024833~0.053333 |
| The Observation point for comparison Tatsunokuchi | 2013-05-31 06:00 | 0.043 | 0.020833~0.081 |
| Kou Itimatsu Suetsugu | 2013-05-31 06:00 | 0.032 | 0.022833~0.085 |
| Noheji Town Office Noheji Town | 2013-05-31 06:00 | 0.032 | 0.011167~0.059 |
| Ukishima Kawasaki Ward | 2013-05-31 06:00 | 0.048 | 0.031667~0.2175 |
| Uenohara Omaezaki City | 2013-05-31 06:00 | 0.044 | 0.028~0.121667 |
| Kuji Hitachi City | 2013-05-31 06:00 | 0.083 | 0.039~0.176 |
| Goritoge Shika Town | 2013-05-31 06:00 | 0.054 | 0.035~0.125167 |
| Kita-koubu Matsue City | 2013-05-31 06:00 | 0.037 | 0.021833~0.103833 |
| Obuchi Rokkasho Village | 2013-05-31 06:00 | 0.023 | 0.012~0.074333 |
| Tonomachi Kawasaki Ward | 2013-05-31 06:00 | 0.032 | 0.026667~0.112333 |
| Kucho Ikata Town | 2013-05-31 05:10 | 0.023 | 0.021333~0.061667 |
| Miyadome Ohi Town | 2013-05-31 04:00 | 0.035 | 0.024667~0.081667 |
| Miyagawa Kashiwazaki City | 2013-05-31 00:50 | 0.039 | 0.025833~0.0985 |
| Funaishikawa Tokai Village | 2013-05-31 00:30 | 0.069 | 0.0425~0.073 |
| Shirowa primary school Omaezaki City | 2013-05-31 00:20 | 0.044 | 0.069~0.118333 |
| Hiranuma Rokkasho Village | 2013-05-31 00:10 | 0.024 | 0.018~0.061833 |
| Kumano Shika Town | 2013-05-30 23:40 | 0.046 | 0.033667~0.116167 |
| Environment Feeds from Ohta | 2013-04-30 09:20 | 0.051 | 0.114 (Japan mean) |
| Geiger Counter Feeds from Asao Kawasaki | 2013-04-29 03:50 | 0.034 | 0.114 (Japan mean) |
| Radiation dose at Tohoku University | 2013-04-28 07:00 | 0.037 | 0.114 (Japan mean) |
| Radiation dose at JAEA Oarai (P2) | 2013-04-27 23:20 | 0.031 | 0.114 (Japan mean) |
| Radiation dose in KEK, Tsukuba | 2013-04-27 15:20 | 0.040 | 0.114 (Japan mean) |
| Fukushima I MP3 | 2011-12-27 15:00 | 12.000 | 0.114 (Japan mean) |
| Fukushima I MP6 | 2011-12-27 15:00 | 33.000 | 0.114 (Japan mean) |
| Fukushima II MP1 | 2011-12-27 15:00 | 1.600 | 0.114 (Japan mean) |
| Fukushima II MP4 | 2011-12-27 15:00 | 1.400 | 0.114 (Japan mean) |
| Fukushima II MP7 | 2011-12-27 15:00 | 0.500 | 0.114 (Japan mean) |
| Fukushima I MP1 | 2011-12-27 15:00 | 4.000 | 0.114 (Japan mean) |
| Fukushima I MP4 | 2011-12-27 15:00 | 11.000 | 0.114 (Japan mean) |
| Fukushima I MP7 | 2011-12-27 15:00 | 89.000 | 0.114 (Japan mean) |
| Fukushima II MP2 | 2011-12-27 15:00 | 1.100 | 0.114 (Japan mean) |
| Fukushima II MP5 | 2011-12-27 15:00 | 1.300 | 0.114 (Japan mean) |
| Fukushima I MP2 | 2011-12-27 15:00 | 19.000 | 0.114 (Japan mean) |
| Fukushima I MP5 | 2011-12-27 15:00 | 14.000 | 0.114 (Japan mean) |
| Fukushima I MP8 | 2011-12-27 15:00 | 68.000 | 0.114 (Japan mean) |
| Fukushima II MP3 | 2011-12-27 15:00 | 1.600 | 0.114 (Japan mean) |
| Fukushima II MP6 | 2011-12-27 15:00 | 0.800 | 0.114 (Japan mean) |
| Ibaraki-city Environment | 2011-10-15 00:49 | 0.044 | 0.114 (Japan mean) |
| Fukushima [75] (distance from Fukushima I: 45 km) | 2011-09-28 16:50 | 0.100 | 0.037~0.071 |
| Fukushima [80] (distance from Fukushima I: 25 km) | 2011-09-28 16:00 | 0.100 | 0.037~0.071 |
| Fukushima [78] (distance from Fukushima I: 45 km) | 2011-09-28 15:00 | 0.500 | 0.037~0.071 |
| Fukushima [45] (distance from Fukushima I: 20 km) | 2011-09-28 13:35 | 0.500 | 0.037~0.071 |
| Fukushima [1] (distance from Fukushima I: 60 km) | 2011-09-28 13:21 | 0.600 | 0.037~0.071 |
| Fukushima [11] (distance from Fukushima I: 40 km) | 2011-09-28 13:21 | 0.800 | 0.037~0.071 |
| Fukushima [44] (distance from Fukushima I: 30 km) | 2011-09-28 13:09 | 0.200 | 0.037~0.071 |
| Fukushima [20] (distance from Fukushima I: 45 km) | 2011-09-28 12:09 | 0.400 | 0.037~0.071 |
| Fukushima [23] (distance from Fukushima I: 35 km) | 2011-09-28 12:02 | 0.500 | 0.037~0.071 |
| Fukushima [22] (distance from Fukushima I: 35 km) | 2011-09-28 11:53 | 0.300 | 0.037~0.071 |
| Fukushima [71] (distance from Fukushima I: 25 km) | 2011-09-28 11:50 | 0.400 | 0.037~0.071 |
| Fukushima [21] (distance from Fukushima I: 30 km) | 2011-09-28 11:45 | 1.800 | 0.037~0.071 |
| Fukushima [72] (distance from Fukushima I: 30 km) | 2011-09-28 11:33 | 0.300 | 0.037~0.071 |
| Fukushima [34] (distance from Fukushima I: 30 km) | 2011-09-28 11:24 | 4.400 | 0.037~0.071 |
| Fukushima [43] (distance from Fukushima I: 20 km) | 2011-09-28 11:21 | 0.500 | 0.037~0.071 |
| Fukushima [73] (distance from Fukushima I: 35 km) | 2011-09-28 11:21 | 0.400 | 0.037~0.071 |
| Fukushima [76] (distance from Fukushima I: 25 km) | 2011-09-28 11:12 | 0.300 | 0.037~0.071 |
| Fukushima [7] (distance from Fukushima I: 45 km) | 2011-09-28 11:07 | 0.500 | 0.037~0.071 |
| Fukushima [79] (distance from Fukushima I: 40 km) | 2011-09-28 10:58 | 7.300 | 0.037~0.071 |
| Fukushima [31] (distance from Fukushima I: 30 km) | 2011-09-28 10:51 | 6.100 | 0.037~0.071 |
| Fukushima [10] (distance from Fukushima I: 40 km) | 2011-09-28 10:46 | 0.500 | 0.037~0.071 |
| Fukushima [5] (distance from Fukushima I: 45 km) | 2011-09-28 10:44 | 0.300 | 0.037~0.071 |
| Fukushima [32] (distance from Fukushima I: 30 km) | 2011-09-28 10:33 | 16.100 | 0.037~0.071 |
| Fukushima [3] (distance from Fukushima I: 45 km) | 2011-09-28 10:06 | 2.000 | 0.037~0.071 |
| Fukushima [15] (distance from Fukushima I: 35 km) | 2011-09-28 10:04 | 0.500 | 0.037~0.071 |
| Fukushima [14] (distance from Fukushima I: 35 km) | 2011-09-28 09:53 | 0.200 | 0.037~0.071 |
| Fukushima [33] (distance from Fukushima I: 30 km) | 2011-09-28 09:53 | 12.500 | 0.037~0.071 |
| Fukushima [41] (distance from Fukushima I: 20 km) | 2011-09-28 09:49 | 0.500 | 0.037~0.071 |
| Fukushima [13] (distance from Fukushima I: 40 km) | 2011-09-28 09:39 | 0.200 | 0.037~0.071 |
| Fukushima [46] (distance from Fukushima I: 20 km) | 2011-09-28 09:15 | 4.300 | 0.037~0.071 |
| Fukushima [2] (distance from Fukushima I: 55 km) | 2011-09-28 09:05 | 1.200 | 0.037~0.071 |
| Fukushima [4] (distance from Fukushima I: 50 km) | 2011-09-28 09:02 | 0.700 | 0.037~0.071 |
| Fukushima [42] (distance from Fukushima I: 30 km) | 2011-09-28 08:36 | 0.700 | 0.037~0.071 |
| Sendai (Miyagi) | 2011-09-07 09:00 | 0.060 | 0.0176~0.0513 |
| Wakayama | 2011-09-05 09:00 | 0.031 | 0.031~0.056 |
| Kagoshima | 2011-09-01 09:00 | 0.036 | 0.0306~0.0943 |
| Okinawa | 2011-08-29 09:00 | 0.024 | 0.0133~0.0575 |
| Saga | 2011-08-29 09:00 | 0.040 | 0.037~0.086 |
| Gifu | 2011-08-29 09:00 | 0.062 | 0.057~0.11 |
| Oita | 2011-08-29 09:00 | 0.050 | 0.048~0.085 |
| Fukuoka | 2011-08-18 09:00 | 0.036 | 0.034~0.079 |
| Akita | 2011-08-18 09:00 | 0.060 | 0.022~0.086 |
| Kagawa | 2011-08-18 09:00 | 0.054 | 0.051~0.077 |
| Aomori | 2011-08-18 09:00 | 0.029 | 0.017~0.102 |
| Okayama | 2011-08-18 09:00 | 0.049 | 0.043~0.104 |
| Shiga | 2011-08-18 09:00 | 0.033 | 0.031~0.061 |
| Shizuoka | 2011-08-18 09:00 | 0.040 | 0.0281~0.0765 |
| Yamanashi | 2011-08-18 09:00 | 0.047 | 0.04~0.064 |
| Miyazaki | 2011-08-18 09:00 | 0.026 | 0.0243~0.0664 |
| Nagasaki | 2011-08-18 09:00 | 0.028 | 0.027~0.069 |
| Yamagata | 2011-08-18 09:00 | 0.044 | 0.025~0.082 |
| Kochi | 2011-08-18 09:00 | 0.027 | 0.023~0.076 |
| Iwate | 2011-08-18 09:00 | 0.045 | 0.014~0.084 |
| Tokushima | 2011-08-18 09:00 | 0.040 | 0.037~0.067 |
| Shimane | 2011-08-18 09:00 | 0.065 | 0.036~0.11 |
| Aichi | 2011-08-18 09:00 | 0.042 | 0.035~0.074 |
| Nagano | 2011-08-18 09:00 | 0.042 | 0.0299~0.0974 |
| Ishikawa | 2011-08-18 09:00 | 0.049 | 0.0291~0.1275 |
| Ehime | 2011-08-18 09:00 | 0.048 | 0.045~0.074 |
| Hokkaido | 2011-08-18 09:00 | 0.030 | 0.02~0.105 |
| Yamaguchi | 2011-08-18 09:00 | 0.092 | 0.084~0.128 |
| Tottori | 2011-08-18 09:00 | 0.041 | 0.033~0.079 |
| Nara | 2011-08-18 09:00 | 0.050 | 0.046~0.08 |
| Kyoto | 2011-08-18 09:00 | 0.038 | 0.033~0.087 |
| Mie | 2011-08-18 09:00 | 0.046 | 0.0416~0.0789 |
| Fukui | 2011-08-18 09:00 | 0.045 | 0.032~0.097 |
| Niigata | 2011-08-18 09:00 | 0.047 | 0.031~0.153 |
| Fukushima [63] (distance from Fukushima I: 45 km) | 2011-08-12 15:14 | 1.200 | 0.037~0.071 |
| Fukushima [52] (distance from Fukushima I: 40 km) | 2011-08-12 15:05 | 0.200 | 0.037~0.071 |
| Fukushima [62] (distance from Fukushima I: 40 km) | 2011-08-12 14:50 | 4.500 | 0.037~0.071 |
| Fukushima [61] (distance from Fukushima I: 40 km) | 2011-08-12 14:41 | 3.500 | 0.037~0.071 |
| Fukushima [51] (distance from Fukushima I: 40 km) | 2011-08-12 14:20 | 0.200 | 0.037~0.071 |
| Radiation at Tamaki-cho Mie Japan | 2011-07-25 09:33 | 0.040 | 0.114 (Japan mean) |
| Radiation via www.houshasen-pref-ibaraki.jp (unofficial information) | 2011-07-14 13:37 | 0.157 | 0.114 (Japan mean) |
| Radiation dose at JAEA Oarai (P6) | 2011-07-14 13:36 | 0.123 | 0.114 (Japan mean) |
| Radiation dose in Iwanuma | 2011-07-14 13:36 | 0.190 | 0.114 (Japan mean) |
| Radiation dose at JAEA Oarai (P13) | 2011-07-14 13:36 | 0.232 | 0.114 (Japan mean) |
| Radiation dose at JAEA Oarai (P16) | 2011-07-14 13:36 | 0.176 | 0.114 (Japan mean) |
| Radiation dose at Ose administration center, Koriyama | 2011-07-14 13:36 | 0.560 | 0.114 (Japan mean) |
| Radiation dose at Agricultural center, Koriyama | 2011-07-14 13:36 | 1.080 | 0.114 (Japan mean) |
| Radiation dose at Shirasawa branch office, Motomiya | 2011-07-14 13:36 | 0.690 | 0.114 (Japan mean) |
| Radiation dose in Tukahama, Ojika | 2011-07-14 13:36 | 0.074 | 0.114 (Japan mean) |
| Radiation dose in Onagawa (MP-3) | 2011-07-14 13:36 | 0.091 | 0.114 (Japan mean) |
| Radiation dose at JAEA Oarai (P1) | 2011-07-14 13:36 | 0.190 | 0.114 (Japan mean) |
| Radiation dose in Yamamoto | 2011-07-14 13:36 | 0.260 | 0.114 (Japan mean) |
| Radiation dose at JAEA Oarai (P5) | 2011-07-14 13:36 | 0.169 | 0.114 (Japan mean) |
| Radiation dose in Natori | 2011-07-14 13:36 | 0.130 | 0.114 (Japan mean) |
| Radiation dose at JAEA Oarai (P15) | 2011-07-14 13:36 | 0.243 | 0.114 (Japan mean) |
| Radiation dose at Tamokami elementary school, Koriyama | 2011-07-14 13:36 | 0.210 | 0.114 (Japan mean) |
| Radiation dose at Koriyama city office, Koriyama | 2011-07-14 13:36 | 0.930 | 0.114 (Japan mean) |
| Radiation dose in Enoshima, Ojika | 2011-07-14 13:36 | 0.064 | 0.114 (Japan mean) |
| Radiation via www.houshasen-pref-ibaraki.jp (unofficial information) | 2011-07-14 13:36 | 0.124 | 0.114 (Japan mean) |
| Radiation dose in Koyadori, Ojika | 2011-07-14 13:36 | 0.075 | 0.114 (Japan mean) |
| Radiation via www.houshasen-pref-ibaraki.jp (unofficial information) | 2011-07-14 13:36 | 0.123 | 0.114 (Japan mean) |
| Radiation dose in Onagawa (MP-2) | 2011-07-14 13:36 | 0.160 | 0.114 (Japan mean) |
| Radiation dose in Marumori | 2011-07-14 13:36 | 0.090 | 0.114 (Japan mean) |
| Radiation dose at JAEA Oarai (P7) | 2011-07-14 13:36 | 0.270 | 0.114 (Japan mean) |
| Radiation dose in Watari | 2011-07-14 13:36 | 0.230 | 0.114 (Japan mean) |
| Radiation dose at JAEA Oarai (P11) | 2011-07-14 13:36 | 0.448 | 0.114 (Japan mean) |
| Radiation dose at JAEA Oarai (P14) | 2011-07-14 13:36 | 0.238 | 0.114 (Japan mean) |
| Radiation dose at Big palette Fukushima, Koriyama | 2011-07-14 13:36 | 0.510 | 0.114 (Japan mean) |
| Radiation dose at Koriyama joint government building, Koriyama | 2011-07-14 13:36 | 1.090 | 0.114 (Japan mean) |
| Radiation dose in Terama, Ojika | 2011-07-14 13:36 | 0.068 | 0.114 (Japan mean) |
| Radiation via www.houshasen-pref-ibaraki.jp (unofficial information) | 2011-07-14 13:36 | 0.077 | 0.114 (Japan mean) |
| Radiation dose in Onagawa (MP-6) | 2011-07-14 13:36 | 0.110 | 0.114 (Japan mean) |
| Radiation via www.houshasen-pref-ibaraki.jp (unofficial information) | 2011-07-14 13:36 | 0.127 | 0.114 (Japan mean) |
| Radiation dose in Onagawa (MP-1) | 2011-07-14 13:36 | 0.100 | 0.114 (Japan mean) |
| Radiation dose in Kakuda | 2011-07-14 13:36 | 0.260 | 0.114 (Japan mean) |
| Radiation dose at Iwane Fureai Plaza, Motomiya | 2011-07-13 14:16 | 1.180 | 0.114 (Japan mean) |
| Fukushima [35] (distance from Fukushima I: 35 km) | 2011-06-16 13:13 | 1.000 | 0.037~0.071 |
| Fukushima [74] (distance from Fukushima I: 35 km) | 2011-06-16 10:52 | 0.200 | 0.037~0.071 |
| Fukushima [77] (distance from Fukushima I: 25 km) | 2011-05-22 13:01 | 1.300 | 0.037~0.071 |
| Fukushima [12] (distance from Fukushima I: 40 km) | 2011-05-15 13:23 | 0.300 | 0.037~0.071 |
| Fukushima [6] (distance from Fukushima I: 45 km) | 2011-05-13 11:39 | 0.800 | 0.037~0.071 |
| Radiation dose at Motomiya city office, Motomiya | 2011-05-10 10:05 | 0.920 | 0.114 (Japan mean) |
| Radiation dose at Tsukidatemachi kamitedo, Date | 2011-05-09 16:35 | 2.000 | 0.114 (Japan mean) |
| Radiation dose at Date city office, Date | 2011-05-09 16:35 | 1.410 | 0.114 (Japan mean) |
| Tochigi | 2011-04-10 17:00 | 0.074 | 0.03~0.067 |
| Osaka | 2011-04-10 17:00 | 0.042 | 0.042~0.061 |
| Toyama | 2011-04-10 17:00 | 0.048 | 0.029~0.147 |
| Tokyo | 2011-04-10 17:00 | 0.083 | 0.028~0.079 |
| Gunma | 2011-04-10 17:00 | 0.041 | 0.017~0.045 |
| Hiroshima | 2011-04-10 17:00 | 0.046 | 0.035~0.069 |
| Hyogo | 2011-04-10 17:00 | 0.037 | 0.035~0.076 |
| kanagawa | 2011-04-10 17:00 | 0.058 | 0.035~0.069 |
| Saitama | 2011-04-10 17:00 | 0.064 | 0.031~0.06 |
| Kumamoto | 2011-04-10 17:00 | 0.027 | 0.021~0.067 |
| Ibaraki | 2011-04-10 17:00 | 0.147 | 0.036~0.056 |
| Chiba | 2011-04-10 17:00 | 0.056 | 0.022~0.044 |
| Dataset 1 | Dataset 2 | Dataset 3 | Dataset 4 | |
| Source | MEXT Readings | MEXT (SPEEDI) | TEPCO | Pachube |
| Data available | since 13.3.2011 or 15.3.2011 hourly averages |
since 1.1.2010 10 minute data |
since 14.4.2011 10 minute data |
since 22.3.2011 different sources with 10 minute data or hourly averages |
| hourly averages | hourly averages | hourly averages | hourly averages | |
| Minimum value (Vmin) and maximum value (Vmax) from usual value band: "Usual value band means a range of the maximum and minimum value observed before the earthquake" [MEXT: e.g. pdf]) | Minimum value (Vmin) and maximum value (Vmax) calculated with the data of the respective locations from 1.1.2010 to 10.3.2011 (from hourly averages) | no value band | no value band |
| Dataset 1, Dataset 2, Dataset 3 and Dataset 4 | |
| Accumulated dose rate = summation of hourly averages of absorbed dose rate Accumulation period: 13.3.2011 up to today |
|
| ❚ ❚ | ❚Accumulation of original data Missing values: ❚Accumulation of interpolated data:
Missing values are approximated since original data of average absorbed dose rate is not available for every hour. Missing data points are computed by linear interpolation.
∅Missing data at the beginning of the period:
Missing values at the beginning of the accumulation period (13.3.) will be set to 0.
All data taken into account in the accumulation is shown in the graph ‘interpolated raw data’ (top left button above the graph).
In those cases the calculated accumulation values show below the actual accumulation values. Regarding the assessment of the timeline: Radiation releases during the initial hydrogen explosions. |
| The red graph shows the accumulation of 0,114 μGy/h based on an estimated average for Japan of 1000 μGy per year (equates 0,114 μGy/h *24 hours * 365 days). The accumulation starts with the first available value of the data set after 13.3.2011 (see missing values above). | |
| The green graph shows the accumulation of Vmax. The accumulation starts with the first available value of the data set after 13.3.2011 (see missing values above). |
| < Vmax | < 10 * Vmax | < 100 * Vmax | > 100 * Vmax |