#   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
   77.832141        1e+38        1e+38
   77.835625        1e+38        1e+38
   77.836493 0.650338088768 -5.67508905811
   77.848021 0.666358012886 -5.67918502739
   77.851493 0.791633942701 -5.58763213808
   77.852870 0.789416902192 -5.59448147997
   77.886562 0.740769527767 -5.6467472539
   77.890012 0.812878286802 -5.43931593512
   77.893484 0.536515509554 -4.34023830986
   77.896968 0.812973357773 -5.63086589556
   77.900440 0.816846221591 -5.55672688606
   77.903912 0.797378619186 -5.56246654693
   77.907384 0.776258505332 -5.54376691081
   77.910856 0.785501009975 -5.61020934678
   77.914329 0.744172036994 -5.48812456724
   77.917801 0.846746320584 -5.69973360605
   77.921273 0.800505918787 -5.57481806202
   77.924745 0.790283292501 -5.61051053118
   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
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   77.980301 1.25478147506 -5.56519652658
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   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 1.34252445675 -5.56045567473
   78.004606 1.34544097284 -5.60266009348
   78.008079 1.26318310406 -5.58167308892
   78.011539 1.25818959546 -5.53255909231
   78.015023 1.10912472333 -5.45331943018
   78.018495 0.865306399381 -5.4516577691
   78.021956 0.884692481729 -5.46692338016
   78.025428 0.851161919883 -5.51927869514
   78.028912 0.829719993356 -5.57437915032
   78.032384 0.881700886609 -5.59420905416
   78.035845 0.956586248821 -5.57013497162