% NTAS-XV Subsurface Iridium 16-Nov-2016 10:06:05.
% year mon day hr min      yday t(10m) t(25m) t(40m) t(55m) t(70m)  vel_E      t  vel_N sal(10m)  vel_V sal(25m)   hdg sal(40m)  echo1 sal(55m)  echo2 sal(70m)  echo3
%                                        degC   degC   degC   degC    m/s   degC    m/s      PSU    m/s      PSU            PSU             PSU             PSU