January 13, 2015
Compared to the previous measurement of 1/8/2015, Cs-134/137 density rose up by 57 times, all β nuclides density also rose up by 57 times.
This is the highest reading measured from this boring. Tepco hasn’t identified the reason. This boring is located outside of the underground wall to stop contaminated groundwater flowing to the sea.
Source: Fukushima Diary