PDS_VERSION_ID                   = PDS3                                       
                                                                              
RECORD_TYPE                      = STREAM                                     
                                                                              
 OBJECT                          = TEXT                                       
  PUBLICATION_DATE               = 2020-12-11                                 
  NOTE                           = "Description of the INDEX                  
                                   directory contents."                       
END_OBJECT                       = TEXT                                       
END                                                                           
                                                                              
                    INDEX Directory Contents                                  
                                                                              
The INDEX directory contains tabular index files describing the               
content of the data set.  Each tabular index is accompanied by                
a detached PDS label.  The index files present depend upon the                
files in the data set.                                                        
                                                                              
                                                                              
Required files present in all data sets:                                      
---------------------------------------                                       
                                                                              
INDXINFO.TXT - The file you are reading.                                      
                                                                              
INDEX.TAB     - Main INDEX table listing all label files                      
                                                                              
INDEX.LBL     - PDS Label for the main INDEX table                            
                                                                              
                                                                              
Optional files, depending on the content of the data set:                     
--------------------------------------------------------                      
BROWSE_INDEX.TAB             - INDEX table listing all label files in the     
                               BROWSE directory                               
                                                                              
BROWSE_INDEX.LBL             - PDS Label for the BROWSE_INDEX table           
                                                                              
GEO_NAVCAM_INDEX.TAB         - lists all calibrated NAVCAM images available   
                               in any Level 3 (calibrated) dataset and for    
                               each of them gives its geometry parameters     
                               and acquisition time.                          
                                                                              
GEO_NAVCAM_INDEX.LBL         - PDS Label file for the GEO_NAVCAM_INDEX Table. 
                                                                              
GEO_NAVCAM_[PHASE]_INDEX.TAB - Lists all calibrated NAVCAM images available   
                               in the Level 3 (calibrated) dataset for the    
                               given [PHASE] of the mission and gives         
                               geometry parameters and acquisition times for  
                               each product.                                  
                                                                              
GEO_NAVCAM_[PHASE]_INDEX.LBL - PDS Label file for the                         
                               GEO_NAVCAM_[PHASE]_INDEX Table.                
                                                                              
NAVCAM_INDEX.TAB             - Lists all calibrated NAVCAM images available   
                               in any Level 3 (calibrated) dataset and for    
                               each of them gives some acquisition            
                               parameters.                                    
                                                                              
NAVCAM_INDEX.LBL             - PDS Label file for the NAVCAM_INDEX Table.     
                                                                              
NAVCAM_[PHASE]_INDEX.TAB     - Lists all calibrated NAVCAM images available   
                               in the Level 3 (calibrated) dataset for the    
                               given [PHASE] of the mission and gives some    
                               acquisition parameters.                        
                                                                              
NAVCAM_[PHASE]_INDEX.LBL     - PDS Label file for the NAVCAM_[PHASE]_INDEX    
                               Table.                                         
                                                                              
Other index files can be defined by the data set developer to list            
products in their data set and to provide valuable information and            
relate various parameters to their data products. These are                   
individual to each data set.                                                  
                                                                              
                                                                              
                 Notes on Using the Index Tables                              
                 -------------------------------                              
     Each index table contains one row (record) for each data product         
on the volume.  The table is formatted so that it can be read directly        
into many data management systems.  All fields are separated by commas        
and character fields are enclosed in double quotation marks (").              
Character fields are left justified and numeric fields are right              
justified.  Each record ends with ASCII carriage return and line feed         
characters.  This allows the table to be treated as a fixed length            
record file on computers that support this file type and as a normal          
text file on other computers.                                                 
                                                                              
     The PDS label file for each table describes the content and              
structure of the fields in the index table.  This description includes        
the name of each field, its format, and a brief definition.  The              
values for start byte and number of bytes listed in the label file do         
not include commas between fields or quotation marks surrounding              
character fields.                                                             
