According to the fall-out research of Ministry of Education, Culture, Sports, Science and Technology, the fall-out level spiked up from 3/30 to 3/31/2012.
(Cesium 134 + 137 , MBq/km2)
3/30/2012 : 21.31
3/31/2012 : 223.2 (↑ 1047 %)
Iori Mochizuki