#    latitude          pdf          cdf
     -79.8167  0.000568662   0.00236686
     -75.6545  0.000284331    0.0035503
     -71.4924  0.000568662   0.00591716
     -67.3302  0.000284331   0.00710059
      -63.168   0.00113732    0.0118343
     -59.0059   0.00227465    0.0213018
     -54.8437   0.00113732    0.0260355
     -50.6816   0.00170599    0.0331361
     -46.5194   0.00312764    0.0461538
     -42.3572   0.00398063    0.0627219
     -38.1951    0.0045493    0.0816568
     -34.0329   0.00852993      0.11716
     -29.8707   0.00796127     0.150296
     -25.7086   0.00739261     0.181065
     -21.5464    0.0147852     0.242604
     -17.3843    0.0181972     0.318343
     -13.2221    0.0193345     0.398817
     -9.05992    0.0238838     0.498225
     -4.89776    0.0307077     0.626036
    -0.735598    0.0264428     0.736095
      3.42657    0.0261585      0.84497
      7.58873    0.0221778     0.937278
      11.7509    0.0116576     0.985799
      15.9131   0.00255898      0.99645
      20.0752  0.000852993            1