> Pdiff at   915.53 seconds at   120.00 degrees for a      0.0 km deep source in the iasp91 model with rayParam    4.439 s/deg.
    0.00     0.0    0.00
    0.04    20.0    3.54
    0.08    35.0    5.94
    0.64   210.0   28.79
    1.38   410.0   53.59
    2.54   660.0   81.87
   49.20  2889.0  409.82
   70.80  2889.0  505.70
  117.46   660.0  833.66
  118.62   410.0  861.94
  119.36   210.0  886.73
  119.92    35.0  909.59
  119.96    20.0  911.98
  120.00     0.0  915.53
