The data cover orbits 1-4975 and span the time period
1978-12-05T15:07:22 to 1992-07-20T00:22:15.

The data are stored as an ASCII file (.TAB). Each data file has a
PDS label file (.LBL) which describes some of the physical
properties of the data.  There is a single format file (.FMT) which
describes the columns of the data files.
 
Catalog data which includes instrument, dataset, and data parameter
descriptions are located at:
  /ONMS/CATALOG/CATALOG.CAT