title: meaning of file .TSP (travelling salesman)
body: <p>I would like understand the informantion in a file .tsp found at:</p>
  
  <p><a href="http://www.tsp.gatech.edu/world/countries.html" rel="nofollow">http://www.tsp.gatech.edu/world/countries.html</a></p>
  
  <p>For example</p>
  
  <p><br>NAME : ar9152
  <br>COMMENT : 9152 locations in Argentina
  <br>COMMENT : Derived from National Imagery and Mapping Agency data
  <br>TYPE : TSP
  <br>DIMENSION : 9152
  <br>EDGE_WEIGHT_TYPE : EUC_2D
  <br>NODE_COORD_SECTION
  <br>1 36266.6667 62550.0000 &lt;- I don't understand? first row is the city and after?
  <br>2 34600.0000 58633.3333
  <br>3 51650.0000 72300.0000
  <br>4 37800.0000 67683.3333</p>