Related by context. Frequent words. (Click for all words.) 70 millisieverts 58 becquerels 57 radioactive iodine 54 radioactivity 53 radioactive substances 50 radiation 49 micrograms 49 Japan Meteorological Agency 48 microgrammes 48 radiation exposure 48 radioactive contamination 47 microgram 46 nanograms per 46 cesium 45 Radiation 45 Fukushima prefecture 44 nitrogen dioxide 44 milligrams 44 mm rainfall 44 ppm 44 Fukushima Daiichi nuclear 43 Fukushima nuclear 43 Fukushima plant 43 ppb 43 Fukushima 42 chest X rays 42 ionizing radiation 42 decibels 42 iodine 42 #.# magnitude aftershock 42 Fukushima Daiichi plant 42 Hidehiko Nishiyama 42 Co TEPCO 41 radioactive particles 41 Kashiwazaki 41 Onagawa 41 ash plume 41 degrees Celsius 41 tritium 40 Iodine 40 Fukushima Daiichi 40 degrees celsius 40 Meteorological Agency 40 Miyagi prefecture 40 radioactive material 40 dioxin 40 nanograms 40 radionuclides 40 Edano 40 degrees Centigrade 39 degrees Fahrenheit 39 milligram 39 Ibaraki prefecture 39 degree Celsius 39 Fukushima Prefecture 39 km radius 39 magnitude earthquake 39 ng mL 39 Tokyo Electric 39 Uranium enriched 39 yen 39 broadcaster NHK 38 pesticide residue 38 #.#C [001] 38 radioactive materials 38 Fukushima Dai ichi 38 kiloton 38 Secretary Yukio Edano 38 radioactive fallout 38 Minamisanriku 38 centimeters 38 PM#.# 38 kilometer radius 38 radiation emitted 38 dioxins 38 Chernobyl disaster 37 Miyagi Prefecture 37 radiation leaks 37 micrometers 37 mg dl 37 radioactive substance 37 TEPCO 37 hexavalent chromium 37 degrees centigrade 37 Eyjafjallajokull glacier 37 ng ml 37 radioactive 37 cubic meter 37 undersea quake 37 cm 37 PM# [003] 37 radioactive steam 36 Tohoku Electric Power 36 milliliters 36 cosmic radiation 36 Tepco 36 mmol L 36 radiation sickness 36 pesticide residues 36 radiological 36 cusecs