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Annual Trend Chart

Select Conditions

Using data registered in the Environmental Radiation Database, you can create an Annual Trend Chart of radioactivity concentration data.
By setting conditions according to the screen prompts, you can easily generate graphs.

The count of applicable data records begins once all required items are selected.

No graph will be generated if no applicable data exists.
FAQ on how to read Annual Trend Charts is available here

Reference ItemsRequired

Select the items you wish to display. This allows you to compare multiple survey areas or view multiple samples/nuclides together.

Survey AreaRequired (Multiple selections allowed)

Select the prefectures you wish to include in the search.

Survey AreaRequired (single selection)

Survey PeriodRequired

Specify the period you wish to search.

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Survey SamplesRequired (multiple selections) Required (single selection)

Select one sample category (major classification) you wish to search. Selecting a sample category (major classification) will display sample subcategories (medium classification).
From the displayed sample subcategories, select the sample for which you wish to create an Annual Trend Chart.

Environmental Sample

Select the sample (subcategory).

Air Radiation Dose (Discrete)

Select the sample (subcategory).

Air Radiation Dose (Continuous)

Select the sample (subcategory).

Survey Nuclide Required (multiple selection) Required (single selection)

Select the nuclide(s) you wish to search for.

Filter by Radiation Type:
Filter by Nuclide Name (Partial Match):
Selecting a survey sample displays the available survey nuclides.
No need to select a survey nuclide.

Concentration unitRequired

Selecting a survey sample displays the available concentration units.

Target SurveyOptional

You can select the survey to be searched. If not selected, all surveys will be included.
For details on each survey, refer to the Target Survey List.

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Annual Trend Chart (Results Display)

To edit the graph title, axis minimum/maximum values, or other graph settings, select the “Edit graph” checkbox and click the “Apply edits” button. The graph will then be redrawn using your updated settings.

FAQ on how to read Annual Trend Charts is available here

※Enter your desired title within 30 characters. Titles exceeding 30 characters will be invalid.

*Enter the maximum value as a multiple of the scale interval. If not a multiple, the maximum value may not display correctly.

Filter Conditions

The search results above were retrieved using the following search criteria.

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Important Notes for Use

When citing data, clearly state in the printed material or other medium that the information is sourced from this database.
For citation examples and other important notes, refer to the Site Policy.

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