Measurement results of radiation doses in the air (Ota)

Graph of radiation doses in the air

[graph]Graph of radiation doses in the air (Ota)

Click on the graph for an enlarged display



[graph]Graph of radiation doses in the air (Ota)

Click on the graph for an enlarged display

We measure radiation doses in the air (gamma rays) for 24 consecutive hours throughout the year using stationary measuring instruments called monitoring posts.

Gray indicates an amount of energy (absorbed dose) when radiation hits a material object, and 1 gray (Gy) of radiation doses in the air can be converted to 1 sievert (Sv).