#    latitude          pdf          cdf
     -79.4054  0.000955849        0.004
     -75.2206  0.000238962        0.005
     -71.0359  0.000955849        0.009
     -66.8511  0.000238962         0.01
     -62.6663    0.0019117        0.018
     -58.4816    0.0019117        0.026
     -54.2968   0.00119481        0.031
      -50.112    0.0019117        0.039
     -45.9273   0.00262858         0.05
     -41.7425   0.00358443        0.065
     -37.5578   0.00406236        0.082
      -33.373   0.00740783        0.113
     -29.1882   0.00764679        0.145
     -25.0035    0.0069299        0.174
     -20.8187    0.0143377        0.234
     -16.6339    0.0174442        0.307
     -12.4492    0.0181611        0.383
     -8.26441    0.0227014        0.478
     -4.07965    0.0291534          0.6
     0.105117    0.0308261        0.729
      4.28988    0.0272417        0.843
      8.47464    0.0210287        0.931
      12.6594    0.0136208        0.988
      16.8442    0.0019117        0.996
      21.0289  0.000955849            1