Following up this article..Reactor buildings are hidden by thick smoke
In the night of 3/1/2012, massive gas covered Fukushima plants.
On the following 2 days of 3/2 and 3/3, cesium fall-out was observed in Tokyo.
It was captured in Koto ku Tokyo, by germanium semiconductor detector.
15:00 3/1/2012 ~ 15:00 3/2/2012
Cesium 134 : 0.0002 Bq/m3
Cesium 137 : ND
15:00 3/2/2012 ~ 15:00 3/3/2012
Cesium 134 : 0.0003 Bq/m3
Cesium 137 : 0.0002 Bq/m3
Iori Mochizuki