According to the measurement data of strontium90 and cesium134/137 by Ministry of Education, Culture, Sports, Science and Technology,(cf. MEXT admitted Strontium90 was measured in Tokyo and 9 other prefectures)
significant amount of Cesium 134 and 137 fallout was measured in Hitachinaka city Ibaraki, Shinjuku ku Tokyo and Chigasaki city Kanagawa on February 2011, one month before 311.
This is more than December 2011.
It’s “Impossible to measure” in Fukushima and Miyagi, which is not Not detectable.
2.2011 (cesium134/137, MBq/km2・month)
Miyagi : impossible to measure
Fukushima : impossible to measure
Ibaraki : 28
Tokyo : 3.2
Kanagawa : 5.5
12.2011
Miyagi : impossible to measure
Fukushima : Equipment is not ready
Ibaraki : Measurement in progress
Tokyo : 6.9
Kanagawa : Measurement in progress
↓ Data of 2.2011
↓ Data of 12.2011
