11 1 ADCP (ACOUSTIC DOPPLER CURRENT PROFILER) 22 2 GEK (GEOMAGNETIC ELECTRO KINETOGRAPH) 33 3 SHIPS'S SET AND DRIFT DETERMINED BY FIXES 3-6 HOURS APART 44 4 SHIPS'S SET AND DRIFT DETERMINED BY MORE THAN 6 HOURS BUT LE" SS THAN 12 HOURS APART 55 5 DRIFT OF BUOY 66 6 ADCP (ACOUSTIC DOPPLER CURRENT PROFILER) 77 7 MISSIN VALUE 8