#    latitude          pdf          cdf
     -79.5029  0.000957937        0.004
     -75.3273  0.000239484        0.005
     -71.1517  0.000957937        0.009
      -66.976  0.000239484         0.01
     -62.8004   0.00191587        0.018
     -58.6247   0.00215536        0.027
     -54.4491  0.000957937        0.031
     -50.2735   0.00191587        0.039
     -46.0978   0.00263433         0.05
     -41.9222   0.00383175        0.066
     -37.7465   0.00407123        0.083
     -33.5709    0.0076635        0.115
     -29.3953   0.00790298        0.148
     -25.2196   0.00670556        0.176
      -21.044    0.0143691        0.236
     -16.8683    0.0174824        0.309
     -12.6927    0.0184403        0.386
     -8.51707     0.022751        0.481
     -4.34143     0.029696        0.605
     -0.16579    0.0304145        0.732
      4.00985    0.0270617        0.845
      8.18549    0.0210746        0.933
      12.3611    0.0131716        0.988
      16.5368   0.00191587        0.996
      20.7124  0.000957937            1