The followong listing describes the format of the DVL data file. DVL V# SID URSIc LAT LONG YYYY/MM/DD Day HH:MM:SS Vx Vx.err Vy Vy.err Az Az.err Vh Vh.err Vz Vz.err Cord Hb Ht Fl Fu DVL V2 042 MHJ45 42.0 288.0 2005/08/26 238 06:18:56 53.12 5.39 -130.16 10.28 292.20 2.49 140.94 10.24 32.26 1.73 Com 305 410 2.10 2.71 DVL V2 042 MHJ45 42.0 288.0 2005/08/26 238 06:33:55 39.61 9.51 -104.38 6.10 290.90 5.86 112.24 2.62 33.13 3.58 Com 355 440 2.09 2.72 DVL V2 042 MHJ45 42.0 288.0 2005/08/26 238 06:48:55 67.33 7.61 -165.79 19.93 291.65 5.57 178.89 15.14 29.96 5.22 Com 315 505 2.08 2.72 Coordinate system convention: COM means Compass GEO means Geographic CGm means Corrected Geromagnetic For example, in the case of using the Compass coordinates: Vx means velocity component in magnetic north direction, Vy means velocity component in "magnetic east" direction Vz means vertical velocity component Az means plasma motion direction counted clockwise from the magnetic north DVL DVL file format identifier V# specifies DVL format version number SID is the Station ID (essentially, latitude of the station) URSIc stands for URSI Code of the station LAT Station Geographic Latitude LONG Station Geographic Longitude YYYY Year MM Month DD Day of month Day Day of year HH:MM:SS Time in UT Hb Bottom (virtual) height of the velocity measurements, km Ht Top (virtual) height of the velocity measurements, km Fl Lower operating frequency, MHz Fu Upper operating frequency, MHz