Distribution map of radioactivity concentration in the seawater around TEPCO Fukushima Daiichi Nuclear Power Station (survey related to the leaked water from a pipeline between a desalination unit and a tank of concentrated water on April 5, 2012 <197th report>) (sampling date; Feb 14, 15, 16, 2013) (published Feb 18, 2013) Distribution map of radioactivity concentration in the seawater around TEPCO Fukushima Daiichi Nuclear Power Station (survey related to the leaked water from a pipeline between a desalination unit and a tank of concentrated water on April 5, 2012 <197th report>) (sampling date; Feb 14, 15, 16, 2013) (published Feb 18, 2013)