Line   Easting  Northing      Helicopter_alt
   10551  420800.  5.408557E+06  30.1000
   10551  420800.  5.408556E+06  26.8000
   10551  420800.  5.408554E+06  24.0000
   10551  420800.  5.408552E+06  21.6000
   10551  420800.  5.408550E+06  18.4000
   10551  420800.  5.408549E+06  17.4000
   10551  420800.  5.408548E+06  21.1000
   10551  420800.  5.408545E+06  24.8000
   10551  420800.  5.408544E+06  28.2000
   10551  420800.  5.408542E+06  30.4000
   10631  422401.  5.397708E+06  28.7000
   10631  422401.  5.397710E+06  30.8000