Radiation Dose Data from the Fixed Point Surveillance Network

The Fixed Point Surveillance (FPS) network monitors public radiation dose due to radioactive materials in the atmosphere whether from natural or man-made sources. The FPS network is used primarily to measure the external dose from three noble gases in particular, Argon-41, Xenon-133 and Xenon-135, as well as the total combined external dose from all sources, measured as Total Air KERMA.

The tables below show the most recent dose data available from the FPS network. Data is normally updated quarterly.

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