CTBT, Comprehensive Nuclear-Test-Ban Treaty’s radiation monitoring post at Takasaki Gunma measured rapid increase of cesium 134 and 137 on 2/17/2012.
2/16/2012
Cesium 134 : 79 microBq/m3
Cesium 137 : 126 microBq/m3
2/17/2012
Cesium 134 : 821 microBq/m3 (↑1039%)
Cesium 137 : 1274 microBq/m3 (↑1011%)
This is the highest reading since 7/25/2011.
The weather was sunny on that day. No explanation is given from Japanese government.
Iori Mochizuki