#   longitude          pdf          cdf
     -28.8651   0.00128938   0.00515464
     -24.8673            0   0.00515464
     -20.8696            0   0.00515464
     -16.8718            0   0.00515464
      -12.874   0.00128938    0.0103093
     -8.87623            0    0.0103093
     -4.87845   0.00128938    0.0154639
    -0.880673            0    0.0154639
       3.1171   0.00386813    0.0309278
      7.11488   0.00386813    0.0463918
      11.1127   0.00773626    0.0773196
      15.1104    0.0283663     0.190722
      19.1082     0.113465      0.64433
       23.106     0.088967            1