#    latitude          pdf          cdf
     -79.4347  0.000953733        0.004
     -75.2406  0.000476866        0.006
     -71.0466  0.000715299        0.009
     -66.8525  0.000238433         0.01
     -62.6585   0.00166903        0.017
     -58.4644   0.00190747        0.025
     -54.2704   0.00119217         0.03
     -50.0763   0.00190747        0.038
     -45.8823   0.00262276        0.049
     -41.6882   0.00333806        0.063
     -37.4942   0.00405336         0.08
     -33.3002    0.0064377        0.107
     -29.1061   0.00786829         0.14
     -24.9121   0.00762986        0.172
      -20.718    0.0135907        0.229
      -16.524    0.0181209        0.305
     -12.3299    0.0183594        0.382
     -8.13587    0.0221743        0.475
     -3.94182    0.0295657        0.599
     0.252227    0.0298041        0.724
      4.44628     0.028612        0.844
      8.64032    0.0216974        0.935
      12.8344     0.012637        0.988
      17.0284    0.0021459        0.997
      21.2225  0.000715299            1