We are preparing to release some information in the next couple of days. Should be interesting (at least to the HP geeks out there) - we will post some google map data also. I know there have been a few "crowd sourced' radiation surveys floating around but these should be viewed with skepticism as anyone can publish to these and lots of posters have agendas. I also have a difficult time believing that thousands of average Japan citizens have at their disposal accurately calibrated and appropriate radiation detection equipment. So - buyer beware on the crowd sourcing.
Here's a bit of information. One of our earliest observations in the Tokyo area is that the contact ground surveys (gamma, beta, alpha) are elevated. However, once the top layer of soil is scraped away, the soil below seems to exhibit lower (ie background) readings. The implications of this are obvious but require more data. As we go through our QA / QC process we can shake out exactly what we are finding.
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