#   yearbase = 2017
#    refuv_inputfile='a_ex.gps',
#    refuv_source='nav',
#    ens_len=300,
#    bl_half_width=3,
#    pgmin=50,
#    rl_startbin=2,
#    rl_endbin=20
   46.923681        1e+38        1e+38
   46.927153        1e+38        1e+38
   46.930625        1e+38        1e+38
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   46.944514 0.130543798485 0.00978394501032
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   47.010475        1e+38        1e+38
   47.013947        1e+38        1e+38
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   47.121586 0.0177938953142 -0.0692387567603
   47.125058 0.116545162487 0.0257125945803
   47.128530 0.182808158766 0.114140515428
   47.132002 0.277733900827 0.195370746231
   47.135475 0.255960217209 0.229349579698
   47.138947 0.284670948258 0.235503550175