The Tokyo metropolitan government kicked off Wednesday a weeklong program to measure radiation levels in the air at 100 locations in the metropolis in a bid to address fears over the nuclear crisis at the Fukushima Daiichi power plant.
There are one to three check points per 4 square kilometers across Tokyo, excluding mountain areas. Two groups of metropolitan government employees will take measurements at six to seven locations a day during the week, with the results published basically everyday on its website after each measurement, it said.
At a park in Toshima Ward, the first location under the program, three employees measured 0.06 microsieverts of radiation one meter above the ground and 0.07 microsieverts at five centimeters above ground, against the legal limit of 1 millisievert per year for the general public.
The move came after a number of requests from cities, towns and villages in Tokyo asking for expanded coverage of radiation measurements to the metropolitan government, as it has conducted measurements only in Shinjuku Ward.