x y ng D (ps/km-nm) 1.500000E+000 2.411156E+000 3.521698E+000 -2.877991E+003 1.510000E+000 2.403782E+000 3.512799E+000 -3.059262E+003 1.520000E+000 2.396467E+000 3.503352E+000 2.598971E+002 1.530000E+000 2.389217E+000 3.514492E+000 4.569012E+003 1.540000E+000 2.381757E+000 3.530781E+000 1.950373E+003 1.550000E+000 2.374295E+000 3.526049E+000 -2.311293E+003 1.560000E+000 2.366896E+000 3.516894E+000 -2.757310E+003 1.570000E+000 2.359551E+000 3.509529E+000 -2.728153E+003 1.580000E+000 2.352247E+000 3.500526E+000 -2.833491E+003 1.590000E+000 2.345016E+000 3.492546E+000 -2.032671E+003 1.600000E+000 2.337812E+000 3.488363E+000 -7.539216E+002