PDS_VERSION_ID     = PDS3
RECORD_TYPE        = STREAM
OBJECT             = TEXT
  PUBLICATION_DATE = 2013-03-08
  NOTE             = "MESSENGER Radio Science RDR archive index directory
contents."
END_OBJECT         = TEXT
END

                        MESSENGER Science Data Archive
                           Radio Science Subsystem
                                INDEXINFO.TXT
                              21 December 2012
                          Johns Hopkins University
                         Applied Physics Laboratory

=============================================================================
INTRODUCTION
=============================================================================

    The INDEX directory contains the INDEX.TAB files which contains listings
of all of the files in a data set as given by PDS labels and some basic
information about them.  This file is required by the PDS and is a standard
component of an archive.  There is one INDEX.TAB file for the entire volume.
    This is a tabular-formatted text file that contains an entry for every
file in the volume.  There is one record in this table for each file.  The
records are of fixed length and contain a fixed set of fields of fixed length
and delimited by commas.  This table has the following columns (fields).  Not
all of the fields will be applicable for every file.  In such cases, the
fields shall contain a "N/A".
    The directory also contains a file named MD5.TAB, which lists an MD5
checksum for every file in the archive. Both INDEX.TAB and MD5.TAB are
accompanied by PDS labels in separate files with the same name but the
extension LBL.

The fields:

VOLUME_ID                 The volume ID of the archive.  This will be the
                          same for all files.

DATA_SET_ID               The data set ID as given in the file's PDS label.

PRODUCT_ID                The product ID as given in the file's PDS label.

PRODUCT_TYPE              The type of product (OCC, SHA, or SHB)

FILE_SPECIFICATION_NAME   The full path to the file PDS label relative to the
                          root directory of the archive.

PRODUCT_CREATION_TIME     The time that the product was created in UTC.

START_TIME                The data collect start time.

STOP_TIME                 The data collect stop time.

PRODUCT_VERSION_ID        Indicates the version number of the product.

=============================================================================
DIRECTORY CONTENTS
=============================================================================

INDEX.TAB                A tabular-formatted text file that contains an
                         entry for every file in the volume.  This file is
                         described in an accompanying PDS label file,
                         INDEX.LBL.

INDEX.LBL                Detached label for the INDEX.TAB file.

MD5.TAB                  A text file containing two columns, the MD5 checksum
                         for a file in the volume following by the name of
                         the file, separated by two spaces. This file is
                         described in an accompanying PDS label file,
                         MD5.LBL.

MD5.LBL                  Detached label for the MD5.TAB file.

INDXINFO.TXT             The informational file you are currently reading.