PDS_VERSION_ID      = PDS3                                                    
RECORD_TYPE         = FIXED_LENGTH                                            
RECORD_BYTES        = 80                                                      
OBJECT              = TEXT                                                    
  PUBLICATION_DATE    = 1997-07-31                                            
  NOTE                = "Description of contents of CATALOG directory"        
END_OBJECT          = TEXT                                                    
END                                                                           
                                                                              
                                                                              
                                                                              
The CATALOG directory contains mission, host, instrument,                     
reference, personnel, and data set PDS catalog objects for this               
archive volume.  The files follow the 'streamlined' format adopted            
by the Planetary Data System (PDS) in late 1993 and documented in the         
Planetary Data System Standards Reference                                     
(Version 3.1, 3 August 1994; JPL D-7669, Part 2).                             
                                                                              
Each catalog object is in ASCII, with a maximum of 72 characters per          
line.  Each line ends with a carriage-return (ASCII 13) line-feed             
(ASCII 10) pair.                                                              
                                                                              
The files are:                                                                
                                                                              
MISSION.CAT                                                                   
                                                                              
A brief description of the mission.  It includes a chronology of              
events, definition of mission phases, and science objectives.                 
                                                                              
INSTHOST.CAT                                                                  
                                                                              
A description of the Mars Pathfinder spacecraft and the                       
Deep Space Network.                                                           
                                                                              
INST.CAT                                                                      
                                                                              
A brief description of the radio system used for these experiments            
on Mars Pathfinder, and a summary description of the Deep Space               
Network instrumentation which supports radio science.                         
                                                                              
REF.CAT                                                                       
                                                                              
A listing of references used elsewhere in the catalog files and of            
references that might be generally useful in working with these data.         
                                                                              
                                                                              
PERSON.CAT                                                                    
                                                                              
A listing of key people involved in analyzing the radio data and in           
producing the archival data set.                                              
                                                                              
                                                                              
DATASET.CAT                                                                   
                                                                              
A description of the data set contained in the archival volumes.              
The file includes information on the primary data types included              
in the archive collection.  Brief discussions of the quality of the           
data are included.