Concentration Range Chart

Condition Selection

Using data registered to the Environmental Radiation Database, you can create concentration range chart.
You can easily create a chart by simply following the instructions displayed on your screen.
Counting of applicable data starts once you made selections for all mandatory items.

Click or tap here for FAQ about how to read concentration range charts

Reference ItemMandatory

Please select the item you want to display measurement results for. You can compare results among multiple survey regions, or show measurement results for multiple samples or nuclides in one chart.

Reference Item

Survey PeriodMandatory

Please specify the period of survey to search.

Year : Month : to Year : Month :

Survey RegionMandatory

Please select the prefectures to search.
* If “Display measurement results for multiple prefectures” was selected for the reference item, you can select up to 10 prefectures.

Survey Region
  • Hokkaido & Tohoku
  • Kanto
  • Chubu
  • Kinki
  • Chugoku
  • Shikoku
  • Kyushu & Okinawa

Survey SampleMandatory

Please select one sample (category) to search.
Once you select a sample (category), a list of samples (subcategory) will be shown, where you can select multiple samples (subcategory).

sample (category)

samples (subcategory)

Survey NuclideMandatory

Please select the type of radionuclides to search.

Survey Nuclide

This does not have to be selected

Concentration UnitMandatory

Please select the unit of the data to show on the chart.

Concentration Unit


Handling of ND (Not Detected)

Handling of ND (Not Detected)

Display of Number of Samples

Display of Number of Samples

Surveys to Use in Your SearchOptional

You can select surveys to use in your search. If no selection is made, all surveys will be included in the search.
For the details of the surveys, see List of Survey Details.

Surveys to Use in Your Search
  • General environment

  • Nuclear facilities

  • Nuclear powered warships