PKiKP (PKikp):
  exists from 0.00 to 152.44 degrees in the prem model.
  with ray parameter from    2.059 down to    0.000 sec/deg.
  travel times from   966.27 to  1170.37 sec.

  P going down as a P in the mantle, layer 3 to 6, depths 200.0 to 2891.0, then transmit down
  K going down as a P in the outer core, layer 7, depths 2891.0 to 5149.5, then reflect topside
  K going up   as a P in the outer core, layer 7, depths 5149.5 to 2891.0, then transmit up
  P going up   as a P in the crust/mantle, layer 6 to 0, depths 2891.0 to 0.0, then end

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