Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution)
FY 2011 - FY 2018   Secretariat of the Nuclear Regulation Authority

This series of data was created based on the Air Dose Rate Measurement in Whole Japan and Fukushima Prefecture (Realtime Distribution System) that is publicly available in the Monitoring Informatio...
This series of data was created based on the Air Dose Rate Measurement in Whole Japan and Fukushima Prefecture (Realtime Distribution System) that is publicly available in the Monitoring Information of Environmental Radioactivity Level website of the Nuclear Regulation Authority. This data converts 1μGy/h (micro Gray per hour) = 1μSv/h (micro Sievert per hour).

Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2018 to August 2018 )
  1. This data was created based on the results of "Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution)" released to the public in the Monitoring Information of Environmental Radioactivity Level portal site by the Secretariat of the Nuclear Regulation Authority.
  2. Although both fixed mount type monitoring posts and portable monitoring posts measure absorbed dose rates [μGy/h] (micro Gray per hour), the data of monitoring posts are released to the public as effective doses with unit of μSv/h (micro Sievert per hour) using the conversion defined by the Guideline for Environmental Radiation Monitoring (Nuclear Safety Commission): 1 μGy/h (micro Gray per hour) = 1μSv/h (micro Sievert per hour). On the other hand, ordinary survey meters and the Real-time radiation measurement systems installed in Fukushima Prefecture measure the 1 cm dose equivalent rate [μSv/h] (micro Sievert per hour). Usually, The 1 cm dose equivalent shows a higher value than the effective dose nevertheless both units are [μSv] (micro Sievert).
  3. See Index file for measurement points and the corresponding file names to download.
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2017 to March 2018 )
  1. This data was created based on the results of "Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution)" released to the public in the Monitoring Information of Environmental Radioactivity Level portal site by the Secretariat of the Nuclear Regulation Authority.
  2. Although both fixed mount type monitoring posts and portable monitoring posts measure absorbed dose rates [μGy/h] (micro Gray per hour), the data of monitoring posts are released to the public as effective doses with unit of μSv/h (micro Sievert per hour) using the conversion defined by the Guideline for Environmental Radiation Monitoring (Nuclear Safety Commission): 1 μGy/h (micro Gray per hour) = 1μSv/h (micro Sievert per hour). On the other hand, ordinary survey meters and the Real-time radiation measurement systems installed in Fukushima Prefecture measure the 1 cm dose equivalent rate [μSv/h] (micro Sievert per hour). Usually, The 1 cm dose equivalent shows a higher value than the effective dose nevertheless both units are [μSv] (micro Sievert).
  3. See Index file for measurement points and the corresponding file names to download.
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2016 to March 2017 )
  1. This data was created based on the results of "Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution)" released to the public in the Monitoring Information of Environmental Radioactivity Level portal site by the Secretariat of the Nuclear Regulation Authority.
  2. Although both fixed mount type monitoring posts and portable monitoring posts measure absorbed dose rates [μGy/h] (micro Gray per hour), the data of monitoring posts are released to the public as effective doses with unit of μSv/h (micro Sievert per hour) using the conversion defined by the Guideline for Environmental Radiation Monitoring (Nuclear Safety Commission): 1 μGy/h (micro Gray per hour) = 1μSv/h (micro Sievert per hour). On the other hand, ordinary survey meters and the Real-time radiation measurement systems installed in Fukushima Prefecture measure the 1 cm dose equivalent rate [μSv/h] (micro Sievert per hour). Usually, The 1 cm dose equivalent shows a higher value than the effective dose nevertheless both units are [μSv] (micro Sievert).
  3. See Index file for measurement points and the corresponding file names to download.
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2015 to March 2016 )
  1. This data was created based on the results of "Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution)" released to the public in the Monitoring Information of Environmental Radioactivity Level portal site by the Secretariat of the Nuclear Regulation Authority.
  2. Although both fixed mount type monitoring posts and portable monitoring posts measure absorbed dose rates [μGy/h] (micro Gray per hour), the data of monitoring posts are released to the public as effective doses with unit of μSv/h (micro Sievert per hour) using the conversion defined by the Guideline for Environmental Radiation Monitoring (Nuclear Safety Commission): 1 μGy/h (micro Gray per hour) = 1μSv/h (micro Sievert per hour). On the other hand, ordinary survey meters and the Real-time radiation measurement systems installed in Fukushima Prefecture measure the 1 cm dose equivalent rate [μSv/h] (micro Sievert per hour). Usually, The 1 cm dose equivalent shows a higher value than the effective dose nevertheless both units are [μSv] (micro Sievert).
  3. See Index file for measurement points and the corresponding file names to download.
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2014 to March 2015 )
  1. This data was created based on the results of "Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution)" released to the public in the Monitoring Information of Environmental Radioactivity Level portal site by the Secretariat of the Nuclear Regulation Authority.
  2. Although both fixed mount type monitoring posts and portable monitoring posts measure absorbed dose rates [μGy/h] (micro Gray per hour), the data of monitoring posts are released to the public as effective doses with unit of μSv/h (micro Sievert per hour) using the conversion defined by the Guideline for Environmental Radiation Monitoring (Nuclear Safety Commission): 1 μGy/h (micro Gray per hour) = 1μSv/h (micro Sievert per hour). On the other hand, ordinary survey meters and the Real-time radiation measurement systems installed in Fukushima Prefecture measure the 1 cm dose equivalent rate [μSv/h] (micro Sievert per hour). Usually, The 1 cm dose equivalent shows a higher value than the effective dose nevertheless both units are [μSv] (micro Sievert).
  3. See Index file for measurement points and the corresponding file names to download.
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2013 to March 2014 )
  1. This data was created based on the results of "Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution)" released to the public in the Monitoring Information of Environmental Radioactivity Level portal site by the Secretariat of the Nuclear Regulation Authority.
  2. Although both fixed mount type monitoring posts and portable monitoring posts measure absorbed dose rates [μGy/h] (micro Gray per hour), the data of monitoring posts are released to the public as effective doses with unit of μSv/h (micro Sievert per hour) using the conversion defined by the Guideline for Environmental Radiation Monitoring (Nuclear Safety Commission): 1 μGy/h (micro Gray per hour) = 1μSv/h (micro Sievert per hour). On the other hand, ordinary survey meters and the Real-time radiation measurement systems installed in Fukushima Prefecture measure the 1 cm dose equivalent rate [μSv/h] (micro Sievert per hour). Usually, The 1 cm dose equivalent shows a higher value than the effective dose nevertheless both units are [μSv] (micro Sievert).
  3. See Index file for measurement points and the corresponding file names to download.
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2012 to March 2013 )
  1. This data was created based on the results of "Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution)" released to the public in the Monitoring Information of Environmental Radioactivity Level portal site by the Secretariat of the Nuclear Regulation Authority.
  2. Although both fixed mount type monitoring posts and portable monitoring posts measure absorbed dose rates [μGy/h] (micro Gray per hour), the data of monitoring posts are released to the public as effective doses with unit of μSv/h (micro Sievert per hour) using the conversion defined by the Guideline for Environmental Radiation Monitoring (Nuclear Safety Commission): 1 μGy/h (micro Gray per hour) = 1μSv/h (micro Sievert per hour). On the other hand, ordinary survey meters and the Real-time radiation measurement systems installed in Fukushima Prefecture measure the 1 cm dose equivalent rate [μSv/h] (micro Sievert per hour). Usually, The 1 cm dose equivalent shows a higher value than the effective dose nevertheless both units are [μSv] (micro Sievert).
  3. See Index file for measurement points and the corresponding file names to download.
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From September 2012 to March 2012 )
  1. This data was created based on the results of "Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution)" released to the public in the Monitoring Information of Environmental Radioactivity Level portal site by the Secretariat of the Nuclear Regulation Authority.
  2. Although both fixed mount type monitoring posts and portable monitoring posts measure absorbed dose rates [μGy/h] (micro Gray per hour), the data of monitoring posts are released to the public as effective doses with unit of μSv/h (micro Sievert per hour) using the conversion defined by the Guideline for Environmental Radiation Monitoring (Nuclear Safety Commission): 1 μGy/h (micro Gray per hour) = 1μSv/h (micro Sievert per hour). On the other hand, ordinary survey meters and the Real-time radiation measurement systems installed in Fukushima Prefecture measure the 1 cm dose equivalent rate [μSv/h] (micro Sievert per hour). Usually, The 1 cm dose equivalent shows a higher value than the effective dose nevertheless both units are [μSv] (micro Sievert).
  3. See Index file for measurement points and the corresponding file names to download.
Publicly available data collected from the website of the relevant organizations and converted into CSV, XML, and KML formats that were easy to use.

Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2017 to March 2018 )
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2016 to March 2017 )
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2015 to March 2016 )
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2014 to March 2015 )
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2013 to March 2014 )
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From April 2012 to March 2013 )
Measurement Results of Air Dose Rates Nationwide and in Fukushima Prefecture (Real-time Distribution) ( From September 2012 to March 2012 )
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