code: function(lat){
          // TK103 sample 4737.1024,N for 47°37'.1024
          var deg= parseInt (lat[0]/100) || 0;
          var min= lat[0] - (deg*100);
          var dec= deg + (min/60);
      
          if (lat [1] === 'S' || lat [1] === 'W') dec= dec * -1;
          return (dec);
      }
docs: Convert gps coordonnates in decimal