1 1 ADCP (ACOUSTIC DOPPLER CURRENT PROFILER)
2 2 GEK (GEOMAGNETIC ELECTRO KINETOGRAPH)
3 3 SHIPS'S SET AND DRIFT DETERMINED BY FIXES 3-6 HOURS APART
4 4 SHIPS'S SET AND DRIFT DETERMINED BY MORE THAN 6 HOURS    BUT LESS THAN 12 HOURS APART
5 5 DRIFT OF BUOY
6 6 ADCP (ACOUSTIC DOPPLER CURRENT PROFILER)
7 7 MISSIN VALUE