orbits          time
              1        1978-12-05T14:30:47.000Z
            4368       1978-11-21T02:01:50.235Z
 
            4494       1991-03-27T01:25:43.330Z
            4975       1992-07-20T00:22:49.919Z

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