Kyodo

Yahoo Japan Corp. is showing real-time radiation levels at 11 locations on a special online map based on data gathered by academics and volunteers monitoring the Fukushima power plant crisis.

A Yahoo Japan official said the beta service, launched Friday, uses data measured by a team at Keio University and Safecast.org and offers location-based readings beyond those taken by the government.

The readings are updated every five minutes and reflect levels at 11 points mainly in northeast and east Japan.