date
  gmtyear
  gmtmonth
  gmtday
  gmttime
  lat
  lon
  temp
  sal
  flvolt
  lat2
  lon2
  paws
  saws
  pawa
  sawa
  airtemp
  humidity
  metpress
  ss1temp
  ss5temp
  csdepth
  fspdw
  sspdw
  fspdb
  sspdb
  sldepth
  head
  head2
  mqual
  msmg
  mcmg
  tqual
  tsmg
  tcmg