Navigation data file-format (OGS-Ukooa extended format):

Each navigation file (.ogs ASCII file) is formatted as follows :

         123456789012345678901234567890123456789012345678901234567890   Columns
         |--------|---------|---------|---------|---------|---------|
Raws  1) H010Description of survey data  xxx...
      2) H020Date of survey              xxx...
         :::::::::::::                   xxx...
     21) H210Scientific Coordinator      xxx...  21 Header lines self-explained (general survey's parameters);
     22) A...
     23) A...
     ::: A...       N data lines, one for each shot, formatted as in (°°)
     ::: A... 

     (°°)                                                                                                                                                   [ see example ]
             Object                          Format   Columns
      --------------------------------------------------------
     Coordinates reference ('A'=Antenna)       A1           1
     Line name                                A16        2-17
     Shot Point's number                       I8       18-25
     Latitude                               2I2,F5.2    26-35
     Longitude                            I3,I2,F5.2    36-46
     Bathymetry                              F6.1       65-70
     Julian day                                I3       71-73
     Hours                                     I2       74-75
     Minutes                                   I2       76-77
     Seconds                                   I2       78-79
     Milliseconds                              I3       80-82  <--
     --------------------------------------------------------