L1
    13     2
  179925.968750  609911.875000
  180449.562500  614186.562500
  181885.656250  618284.750000
  184267.500000  621962.625000
  187525.015625  624659.687500
  191202.859375  626341.000000
  195055.828125  627216.687500
  199364.156250  627356.812500
  203532.375000  626691.250000
  207490.437500  624904.875000
  210888.062500  622382.937500
  213024.703125  619265.500000
  214793.468750  615802.500000