y               x
      3.478000E+04    5.000000E+01
      2.861000E+04    5.500000E+01
      2.365000E+04    6.000000E+01
      1.963000E+04    6.500000E+01
      1.637000E+04    7.000000E+01
      1.372000E+04    7.500000E+01
      1.154000E+04    8.000000E+01
      9.744000E+03    8.500000E+01
      8.261000E+03    9.000000E+01
      7.030000E+03    9.500000E+01
      6.005000E+03    1.000000E+02
      5.147000E+03    1.050000E+02
      4.427000E+03    1.100000E+02
      3.820000E+03    1.150000E+02
      3.307000E+03    1.200000E+02
      2.872000E+03    1.250000E+02