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Tokyo ups radiation checks to 100 sites via The Japan Times

The Tokyo Metropolitan Government kicked off a weeklong program Wednesday to measure radiation levels in the air at 100 locations to address fears over the nuclear crisis at the Fukushima No. 1 power plant, instead of just relying on one central monitoring site since the emergency erupted in March.

Officials have designated one to three checkpoints per 4 sq. km across Tokyo, excluding mountainous areas. Two groups of metropolitan government employees will take measurements at six to seven locations a day during the week, with the results published almost every day on its website after each measurement.

At a park in Toshima Ward, the first location under the program, three employees measured 0.06 microsievert of radiation 1 meter above the ground and 0.07 microsievert at 5 cm above ground, against the legal limit of 1 millisievert per year for the general public.

Tokyo ups radiation checks to 100 sites

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