#   yearbase = 2016
#    refuv_inputfile='a_ex.gps',
#    refuv_source='nav',
#    ens_len=300,
#    bl_half_width=3,
#    pgmin=50,
#    rl_startbin=2,
#    rl_endbin=20
   54.093056        1e+38        1e+38
   54.098519        1e+38        1e+38
   54.101991 -0.00855701511909 -0.00946614742954
   54.105463 -0.00439678597792 0.0172410665217
   54.108935 -0.00373469299081 -0.00509785214538
   54.112477 0.0175423172648 -0.00349110485354