The DATA directory is divided into six subdirectories. The data directories (OMAG and OEFD) are further subdivided into sample rate or resolution. The remaining directories contain ancillary information which is useful for both OMAG and OEFD data regardless of resolution. Ephemeris data can be found in the EPHEM directory, OEFD phase information and OMAG offsets can be found in the PHASEOFF directory, OMAG and OEFD instrument status parameters can be found in the INSTSTAT directory, and engineering parameters such as temperatures can be found in the ENGR directory. Also contained in the DATA directory is the COORDS.TXT and SOFTWARE.TXT files. These files contain descriptions of the coordinate system and software used to process the OMAG and OEFD data files on this CD-ROM.