The OMAG directory is divided into two subdirectories.  These directories
(24S and HIRES) contain either 2 spin period averages with data output on
single spin period centers (approximately 24 second averages with data output
approximately every 12 seconds) or full resolution data for orbits 4151-4300.
Data are organized into single orbit files which follow the naming convention:
ORBxxxx.FFD where xxxx is a four digit orbit number. In addition, for each
data file there is a header file ORBxxxx.FFH, a label file which describes the
file characteristics, such as number of records, record length, etc. called
ORBxxxx.LBL.  Also contained in the OMAG directory are the files COORDS.TXT,
DSPROC.TXT, INST.TXT and PARM.TXT which are templates. The COORDS.TXT describes
the various coordinate systems, the DSPROC.TXT maps data processing software
to PDS datasets, the INST.TXT describes the OMAG instrument and the PARM.TXT
describes the measured and derived parameters of the OMAG experiment. In addi-
tion, each file has a .LBL file which describes the file characteristics. A
file called CATALOG.CAT in the CATALOG directory contains all of the PDS
catalog templates on this CD-ROM.

OMAG -|
      | - 24S (contains low resolution OMAG data files)
      |
      | - HIRES (contains high resolution OMAG data files)
      |
      | - DSPROC.TXT (specifies software used to process this dataset)
      |
      | - INST.TXT (describes the Magnetometer instrument)
      |
      | - PARM.TXT (describes the instrument and dataset parameters)