#   yearbase = 2017
#    refuv_inputfile='a_ex.gps',
#    refuv_source='nav',
#    ens_len=120,
#    bl_half_width=3,
#    pgmin=50,
#    rl_startbin=2,
#    rl_endbin=20
   48.728414        1e+38        1e+38
   48.729803        1e+38        1e+38
   48.731192 0.0274279944194 -0.0295115261593
   48.732581 0.00449538929341 -0.0312621054877
   48.733970 -0.0201715565994 0.0170331077991
   48.735359 -0.0479109591348 0.0730995388327
   48.736748 -0.0602983461669 0.115478790074
   48.738137 -0.0370349904547 0.0556935518361
   48.739525 -0.0596757288709 0.222519716455
   48.740914 -0.076866660761 0.335863995045
   48.742303 -0.100045283101 0.486593567854
   48.743692 -0.0623565836086 0.443971060951
   48.745081 -0.0454018082457 0.24705969382
   48.746470 0.00542372761749 -0.0330454820235
   48.747859 0.0478907150658 -0.265427239193
   48.749248 0.0367151344733 -0.246951631721
   48.750637 0.0600950879522 -0.267666744528
   48.752025 0.0337936340907 -0.245007818745
   48.753414 0.0547354506338 -0.267745280499
   48.754803 0.0614608846849 -0.355194263056
   48.756192 0.0849701290774 -0.522057274053
   48.757581 0.0804558523754 -0.504918384049
   48.758970 0.100062519341 -0.483872968743
   48.760359 0.099120791365 -0.512380896952
   48.761748 0.0842664813473 -0.494479847912
   48.763137 0.0845433278466 -0.530194312566
   48.764525 0.0567723939231 -0.491741141467
   48.765914 -0.00923823201161 -0.51486619269
   48.767303 0.0101546413223 -0.502932193806
   48.768692 0.0138809898348 -0.528165914123
   48.770081 0.00795244480501 -0.507204946439
   48.771470 8.86381480642e-05 -0.518702069885
   48.772859 0.0218721180384 -0.520507148723
   48.774248 -0.00843295888552 -0.497531699406
   48.775637 0.0331279669701 -0.529649956144
   48.777025 0.00258333982522 -0.291288145898
   48.778414 -0.00900358618349 0.0189476640575
   48.779803 0.00867073340835 0.000167827877851
   48.781192 0.0102930295514 -0.00161006355651
   48.782581 -0.00665722481327 -0.00276033794553
   48.783970 0.00437053832716 -0.0107019515047
   48.785359 -0.00301300859294 0.0158649185415
   48.786748 -0.006979362692 -0.00675157780636
   48.788137 -0.00240445568869 0.00992809554592
   48.789525 0.0262532505485 -0.0152729111445
   48.790914 -0.0212432031449 0.00737951512486
   48.792303 -0.00415663657358 -0.00535392427914
   48.793692 -0.00353136410848 0.0150697395668
   48.795081 0.0222166558441 -0.0139230776188
   48.796470 -0.0168319366219 -0.0137954549507
   48.797859 0.00920301348391 0.00714003164912
   48.799248 -0.0154145560515 0.0870919664534
   48.800637 -0.0472155026268 0.270161656565
   48.802025 -0.058844662912 0.329280793601
   48.803414 -0.12276789014 0.37504972248
   48.804803 -0.182918824353 0.417049763629
   48.806192 -0.237592933171 0.437909013268
   48.807581 -0.195549676058 0.420372378866
   48.808970 -0.17249982318 0.375392913036
   48.810359 -0.171344347334 0.393655222113
   48.811748 -0.109509227019 0.2385017712
   48.813137 -0.0199564548699 0.100050275688
   48.814525 0.071350353601 0.0538707269377
   48.815914 0.0288230356713 0.0445810916379
   48.817303 0.100147903755 0.123797368154
   48.818692 0.0978790035177 0.130752771761
   48.820069 0.0769628812994 0.129245038836
   48.821458 0.0911856641196 0.105936888835
   48.822847 0.102469657406 0.147078162481
   48.824236 0.0908927771904 0.107686809499
   48.825625 0.103826193786 0.117275359797
   48.827014 0.107329048464 0.142076515139
   48.828403 0.0744276808278 0.133633979096
   48.829792 0.0754146190144 0.135416259543
   48.831181 0.127420479671 0.0833384237348
   48.832569 0.0738281916116 0.136268059539
   48.833958 0.0952111488473 0.106219286976
   48.835347 0.089456164909 0.145856607042
   48.836736 0.0948451494831 0.109161959976
   48.838125 0.0930555918891 0.120326531889
   48.839514 0.0511948784018 0.077814773969
   48.840903 0.0097000837363 -0.0132764542876
   48.842292 -0.00440128080557 0.0130930017773
   48.843681 0.0016166807003 0.00460987995662
   48.845069 -0.0012574183281 -0.00184395198273
   48.846458 -0.0150002849985 0.0200083195816
   48.847847 0.0276632041934 -0.0229572021668
   48.849236 -0.0299085921622 -0.00414889196224
   48.850625 0.0202983234717 -0.0027659279757
   48.852014 -0.000179644103447 -0.000368816952515
   48.853403 -0.0129334450366 0.00322691597224
   48.854792 0.00565838225122 0.000460987996426
   48.856181 0.000718524711436 -0.00175175438389
   48.857569 -0.00646718840368 0.0153059034717
   48.858958 0.0122149209226 -0.0113403046916
   48.860347 -0.0113167642378 -0.0144750230782
   48.861736 -0.00511948866004 0.0200990766262
   48.863125 0.0241621333106 -0.0232354679435
   48.864514 -0.0184121958097 0.0209288550258
   48.865903 0.00547875106316 -0.0127232686903
   48.867292 -0.0077246968261 0.00304273985149
   48.868681 0.00682598478796 -0.00165955678753
   48.870069 0.00341299247993 0.0119856878951
   48.871458 0.00116760269008 -0.00553185595031
   48.872847 0.00673665443617 0.000737633903081
   48.874236 -0.0114963957568 -0.00119856878862
   48.875625 -0.00314354567106 -0.00322691597205
   48.877014 0.0103287930168 0.00608504154548
   48.878403 -0.00125750882079 -0.0065465008863
   48.879792 -0.00206575860566 0.0064538319434
   48.881181 0.00134723384782 -0.0121700830961
   48.882569 -0.00538893530162 0.00534746075645
   48.883958 0.000449110284752 0.00129085932886
   48.885347 0.00179631179911 -0.000645383193844
   48.886736 -0.00476056919236 0.0141072483839
   48.888125 0.0137417856543 -0.0169643582469
   48.889514 -0.012304735934 0.0086665743265
   48.890903 0.00889238365473 -0.0122631636376
   48.892292 -0.081462747006 0.0473895659208
   48.893681 -0.0791275598132 0.0474817633088
   48.895069 -0.0760738474025 0.0531058165779
   48.896458 0.0157188701852 -0.0171499880293
   48.897847 0.00565838550576 -0.00691481986361
   48.899236 -0.00341299442229 0.00525526309551
   48.900625 -0.00916119562491 -0.00156735916748
   48.902014 0.0110473244686 0.0132764541281
   48.903403 -0.00143715386909 -0.00138306355052
   48.904792 -0.000179631286793 0.00184395196149
   48.906181 0.000628709526902 -0.00341131112911
   48.907569 0.0101491681978 0.000184395196682
   48.908958 -0.0169763797993 0.00248951439113
   48.910347 0.00296391639391 0.000829778382379
   48.911736 -0.00395217314136 0.00295053557424
   48.913125 0.00251483817506 -0.00682262225573
   48.914514 -0.00251483811624 -0.00276592794415
   48.915903 -0.0043111510811 0.00580844868009
   48.917292 -0.0669126642755 0.0363258535745
   48.918681 -0.0852412138162 0.0512655553148
   48.920069 -0.0616135710543 0.0642617251283
   48.921458 0.00350281272567 -0.0197302857228
   48.922847 0.00520968608878 0.000737633884997
   48.924236 -0.0117658571014 -0.017701938623
   48.925625            0 0.0107871188515
   48.927014 -0.00188626566693 0.0180720301676
   48.928403 0.00853249218104 -0.02056006411
   48.929792 -0.00859290471174 0.00119992399412
   48.931181 0.00894443972116 -0.0166820828583
   48.932569 -0.00621330568609 0.00287856945308
   48.933958 0.0025194263612 -0.0122530177578
   48.935347 -0.0255974725103 -0.00543965823403
   48.936736 -0.0268568279779 0.0377115324033
   48.938125 -0.0677210502108 0.0371556314825
   48.939514 0.0129334648234 0.0153969986159
   48.940903 -0.000449078641871 -0.0124466755261
   48.942292 -0.0202099947565 0.0269236366437
   48.943681 -0.0893666687896 0.0449924269045
   48.945069 -0.0134723638951 0.00903536439763
   48.946458 -0.00871275618577 0.00138306351718
   48.947847 -0.00287410427326 -0.0166877648594
   48.949236 0.0117658640988 0.00875877161526
   48.950625 -0.00422164456511 -0.00175188045752
   48.952014 0.00843889549805 0.0118504051774
   48.953403 -0.0375365783557 0.0118159943156
   48.954792 -0.0884685417912 0.0455456121823
   48.956181 -0.0105092041975 0.0118943461748
   48.957569 -0.00961029008604 0.00636163406675
   48.958958 -0.00556857930263 -0.00571625090096
   48.960347 0.00152686850897 0.000184395190929
   48.961736 -0.0126649388864 0.00156747197575
   48.963125 -0.0111057375532 0.0108344954108
   48.964514 -0.103626002014 0.0388682458744
   48.965903 0.0278986131703 0.0328881557547
   48.967292 -0.00507669800177 -0.0291292818756
   48.968681 0.00136257803908 0.0197737672976
   48.970069 0.0103152100768 -0.0228692685232
   48.971458 -0.000300134596274 0.0200086552492
   48.972847 -0.00965380033544 -0.0103655250709
   48.974236 0.00666700427407 0.00459887674927
   48.975625 -0.022728273316 -0.0125258184117
   48.977014 0.0132702130687 0.0148948978276
   48.978403 -0.0826042198529 0.0355519387394
   48.979792 -0.0767222064506 0.0586411995915
   48.981181 -0.0621888444945 0.0428108444035
   48.982569 0.0074357429368 -0.00228947910428
   48.983958 -0.05077517075 0.00351633725751
   48.985347 -0.0708193061664 0.0325975231206
   48.986736 -0.061143498406 -0.0141011655418
   48.988125 0.0151452931099 0.00905837225086
   48.989514 0.0038830622121 -0.0158724676248
   48.990903 0.00287640557618 0.016130561736
   48.992292 -0.00566599827185 -0.011779374566
   48.993681 -0.00619719308469 0.0126258582645
   48.995069 -0.0777158884978 0.0641340790486
   48.996458 -0.0880772666016 0.0135023374606
   48.997847 -0.040036488519 0.0399325971625
   48.999236 -0.0657665198441 0.0125737299727
   49.000625 -0.028834904399 0.00946931412641
   49.002014 -0.0768176174004 0.0727751623806
   49.003403 -0.0769549087532 0.0903881031553
   49.004792 0.00476059209247 -0.0166889655054
   49.006181 0.00604599046599 0.00521001501467
   49.007569 -0.0138934073786 -0.0126446457235
   49.008958 0.00790852128407 -0.0165507152253
   49.010347 -0.0490136899485 0.0406863544624
   49.011736 -0.0874977154053 0.0497355067406
   49.013125 -0.0989597880916 0.00155844463419
   49.014514 -0.00456491094486 0.00276230319774
   49.015903 0.00214215603251 0.0225761563689
   49.017292 0.00733234172208 -0.030431110194
   49.018681 -0.0159593269349 0.0374142408408
   49.020069 -0.0905264852284 0.0115197647896
   49.021458 -0.110503489941 0.0081316311496
   49.022847 -0.0471081603786 0.0045975440771
   49.024236 -0.0111227963296 0.00972914153061
   49.025625 0.0132618854442 0.00642808486204
   49.027014 0.00418835580213 -0.00478193494249
   49.028403        1e+38        1e+38
   49.029792        1e+38        1e+38
   49.031181 -0.12106130072 0.0287898209274
   49.032569 -0.106657158532 -0.0160103002484
   49.033958 -0.0479198409274 -0.00338108787603
   49.035347 -0.00172884004743 -0.00973396124576
   49.036736 0.0157233033293 -0.00382130701345
   49.038125 -0.0263673344425 0.00738095986081
   49.039514 -0.0516820789693 -0.0554659224579
   49.040903 -0.0867900830905 -0.0344495918147
   49.042292 -0.0664281569323 -0.0661458817045
   49.043681 -0.0332621130316 0.00281516673051
   49.045069 -0.11029308897 -0.0437210497394
   49.046458 0.0251845638488 -0.00555747636897
   49.047847 -0.0167278034523 0.0139620667482
   49.049236 -0.0117496939351 -0.005699826924
   49.050625 0.0944353897546 0.0359888504543
   49.052014 -0.0115091595906 -0.00458823234322
   49.053403 0.00613918480176 0.00397147673107
   49.054792 0.0529350953217 -0.0526918349218
   49.056181 -0.00959186133923 -0.00613651505245
   49.057569 0.0245701895585 -0.0104072431605
   49.058958 0.042011752521 -0.0486403122556
   49.060347 0.00482044882353 0.00701365515919
   49.061736 0.00344345579205 -0.00992967915297
   49.063125 -0.0117065554525 -0.00242666040125
   49.064514 0.00560778526556 0.0252273367251
   49.065903 0.0030925966071 -0.0212032160736
   49.067292 0.00603382031235 0.00553200440791
   49.068681 0.00711763064264 -0.0243355767676
   49.070069 -0.00894430128883 -0.107348802467
   49.071458 0.00845934117179 0.0194070363965
   49.072847 -0.0107627498186 -0.000367177047826
   49.074236 -0.00828729768686 -0.129946543677
   49.075625 0.00574138371028 -0.048812617213
   49.077014 0.0141648800051 -0.0599055657808
   49.078403 -0.00451761601639 -0.024096034376
   49.079792 -0.00092005510562 -0.00740159708551
   49.081181 0.014672348683 -0.056293667895
   49.082569 0.022549244482 -0.0500079396406
   49.083958 -0.00891090157426 0.0208536525882
   49.085347 -0.00256421008545 0.00960580088128
   49.086736 -0.0126332879765 0.00911566887265
   49.088125 0.0017018047126 0.00390445242531
   49.089514 0.00176022167165 -0.00109896440476
   49.090903 0.00958424216584 -0.0306985544611
   49.092292 -0.00407356329474 0.0182319117053
   49.093681 0.0105294331783 -0.00526201589781
   49.095069 -0.016586001121 -0.00145615152047
   49.096458 0.011605119515 0.0184341387485
   49.097847 -0.00451996467048 -0.00978347418582
   49.099236 -0.0333618811639 0.257537884904
   49.100625 -0.0335386614971 0.131210019388
   49.102014 -0.00239799523629 0.192897421107
   49.103403 -0.0232082530199 0.197685532069
   49.104792 -0.0426657829047 0.218638757779
   49.106181 -0.0176179131133 0.203152900872
   49.107569 -0.0215856641629 0.203788583854
   49.108958 -0.021075779109 0.205527426447
   49.110347 -0.023315967786 0.191006218209
   49.111736 -0.0335381937927 0.216788542778
   49.113125 -0.0336668794348 0.221713566017
   49.114514 -0.0109118387505 0.183298936178
   49.115903 -0.0238487098373 0.23470312255
   49.117292 -0.0485234484621 0.257532250089
   49.118681 -0.0205909055123 0.256504400358
   49.120069 -0.0282816852299 0.24355887877
   49.121458 -0.039882707338 0.25924441252
   49.122847 -0.026516769655 0.250184929684
   49.124236 -0.0321593616413 0.265075647969
   49.125625 -0.0256609896624 0.251756213022
   49.127014 -0.0424443792239 0.246765015537
   49.128403 -0.0233308339708 0.243520159663
   49.129792 -0.021212278452 0.261287650203
   49.131181 -0.148228257369 0.225578546922
   49.132569 -0.0307451840473 0.25487883356
   49.133958 -0.10079930715 0.206063464704
   49.135347 -0.0828471595548 0.170028090685
   49.136736 -0.117574436932 0.249398154909
   49.138125 -0.157730300178 0.269233216509
   49.139514 -0.0715995566208 0.146978837007
   49.140903 -0.0546316757729 0.124750301949
   49.142292 -0.0741999232151 0.156101434142
   49.143681 -0.117105683304 0.225534557117
   49.145069 -0.14409234927 0.268802682688
   49.146458 -0.170842641544 0.32973315885
   49.147847 -0.148113439626 0.271084097268
   49.149236 -0.141211344959 0.213769035356
   49.150625 -0.241699403862 0.362250634016
   49.152014 -0.241546014259 0.281176614878
   49.153403 -0.175350920907 0.285379201035