#   yearbase = 2015
#    refuv_inputfile='a_nf.gps',
#    refuv_source='nav',
#    ens_len=300,
#    bl_half_width=3,
#    pgmin=50,
#    rl_startbin=2,
#    rl_endbin=20
   77.815694        1e+38        1e+38
   77.819167        1e+38        1e+38
   77.820509 0.69868528101 -5.727452798
   77.886562 0.718552874582 -5.66346893366
   77.890012 0.817623644498 -5.44855951283
   77.893484 0.548486214993 -4.36260972128
   77.896968 0.808182003879 -5.62511263421
   77.900440 0.816594431311 -5.55338573013
   77.903912 0.789816413329 -5.53578147669
   77.907384 0.774077439352 -5.55082694453
   77.910856 0.785333359344 -5.60462042329
   77.914329 0.767713051373 -5.57838243266
   77.917801 0.814315202593 -5.57916742882
   77.921273 0.817306953933 -5.57369776494
   77.924745 0.780897414906 -5.61796473166
   77.928218 0.77050624241 -5.61143079017
   77.931690 0.787105396508 -5.59907103171
   77.935162 0.807942254195 -5.61623553488
   77.938634 0.816300028685 -5.59749093621
   77.942106 0.810480720181 -5.61083615821
   77.945579 0.773325414555 -5.58929933463
   77.949051 0.799736682343 -5.59359214917
   77.952523 1.01922829976 -5.60337208655
   77.955995 1.14974374199 -5.61453945416
   77.959468 1.17937342785 -5.64081707529
   77.962940 1.20799096932 -5.63824549993
   77.966412 1.22288664299 -5.67269944145
   77.969884 1.2544400425 -5.62395638797
   77.973356 1.25572645422 -5.52936983453
   77.976829 1.31761045483 -5.49232764995
   77.980301 1.26053288053 -5.59419593259
   77.983773 1.27015660183 -5.61036787613
   77.987245 1.28503902729 -5.6447493569
   77.990718   1.27531114 -5.65448253718
   77.994190 1.28865787944 -5.61520133028
   77.997662 1.26285316042 -5.57575523726
   78.001134 1.34248007868 -5.56043088597
   78.004606 1.34548555103 -5.60268732893
   78.008079 1.26318310406 -5.58167308892
   78.011539 1.25818959546 -5.53255909231
   78.015023 1.10699874394 -5.43645107063
   78.018495 0.866478406601 -5.45414637367
   78.021956 0.885313497309 -5.4805961452
   78.025428 0.851161919883 -5.51927869514
   78.028912 0.829719993356 -5.57437915032
   78.032384 0.881700886609 -5.59420905416
   78.035845 0.956586248821 -5.57013497162