#    latitude          pdf          cdf
     -75.6224   0.00144189    0.0103093
     -68.4725  0.000720945    0.0154639
     -61.3227   0.00144189    0.0257732
     -54.1729   0.00144189    0.0360825
      -47.023   0.00288378     0.056701
     -39.8732  0.000720945    0.0618557
     -32.7234   0.00432567    0.0927835
     -25.5735    0.0108142     0.170103
     -18.4237    0.0108142     0.247423
     -11.2738    0.0173027     0.371134
     -4.12401    0.0310006     0.592784
      3.02582    0.0302797     0.809278
      10.1757    0.0194655     0.948454
      17.3255   0.00720945            1