20
     260.0      45.0
     280.0      45.0
     300.0      45.0
     320.0      45.0
     340.0      45.0
     360.0      45.0
     380.0      45.0
     400.0      45.0
     420.0      45.0
     440.0      45.0
     460.0      45.0
     480.0      45.0
     500.0      45.0
     520.0      45.0
     540.0      45.0
     560.0      45.0
     580.0      45.0
     600.0      45.0
     620.0      45.0
     640.0      45.0