都内の環境放射線量調査１日単位の測定結果はここです：
http://ftp.jaist.ac.jp/pub/emergency/monitoring.tokyo-eiken.go.jp/monitoring/past_data.html
Click here for regular up-to-the-hour updated information: http://113.35.73.180/report/report_table.do
Next, updated daily and hourly from the Advanced Industrial Science and Technology Unit in Tsukuba (Tsukuba is between Tokyo and the accident site at Fukushima. It is about 75 kilometers north of Tokyo, and 150 kilometers south of Fukushima). Is an updated hourly summary of radiation measured in microSv/hour. You can view the daily and hourly radiation level updates here: http://www.aist.go.jp/taisaku/ja/measurement/index.html
Here is an chart from the National Institute of Advanced Industrial Science and Technology's National Metrology Institute of Japan webpage. It shows what typical radiation levels (measured in microSv) are in our daily lives:
At the bottom left, you see the mark of 190. That's the amount of radiation you get on a one-way flight from Tokyo to New York. Above that, you see the number 2400. That is the amount of radiation that a person gets annually from nature. At the top left is the number 10000. That is annual radiation amount a person who lives in Karapari City in Brazil gets. At the top right, you see 6900, that's the amount of radiation you get from a CT scan. Bottom right? That's 50, the amount a person receives from one X-ray.
As you can see, there is absolutely no radiation risk in Tsukuba and Tsukuba is much closer to the accident site than is Tokyo. One gets a much bigger dose of radiation flying from Narita to New York. In fact, at 0.05 microSv per hour, you would have to be standing outside in the elements everyday for nearly 40 days straight to equal the amount of radiation you'd receive on just that single one-way flight from Tokyo to New York.
Thanks to Mark!
