PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2012-02-15 NOTE = "Description of the INDEX directory contents for this NEAR MAG archive volume." END_OBJECT = TEXT END INDEX Directory Contents The INDEX directory contains tabular index files, accompanied by detached PDS labels, for the data products on this volume. It also contains cumulative index tables if this volume is a member of a multi-volume dataset. The cumulative index table is for products on this volume and on other NEAR MAG archive volumes. The following files are found in this directory. INDXINFO.TXT - The file you are reading. INDEX.LBL - PDS label for INDEX.TAB INDEX.TAB - Index table for Level 2 products on this volume only. CUMINDEX.LBL* - PDS label for CUMINDEX.TAB CUMINDEX.TAB* - Cumulative index table for Level 2 products on this volume and on previous MAG archive volumes. (*) = This file is only present on this volume if it is one of a multi-volume dataset. Notes on Using the Index Tables An index table contains one row (record) for each data product it describes. 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 file with extension ".LBL" and the same name as an index table is a PDS label file that 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 following files were added in Winter 2012 for use in long-term maintenance: CHECKSUM.LBL PDS label for CHECKSUM.TAB CHECKSUM.TAB MD5 checksums for every file in the data set except itself and CHECKSUM.LBL