PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM

OBJECT                = TEXT
  PUBLICATION_DATE    = 2011-09-20
  NOTE                = "Description of contents of INDEX directory"
END_OBJECT            = TEXT
END

The INDEX directory contains index tables that list every DDR data
product in the archive. The index tables are organized by month and are
of the form DDRyymm_INDEX.TAB. When a month is split across volumes, the DOY 
range is appended to the index table name (e.g., DDR0808_214_221_INDEX.TAB 
contains a list of DDRs from DOY 214 through 221 in August 2008. August 2008 
DDRs for DOY 222+ can be found on the next volume in 
DDR0808_222_244_INDEX.TAB).

Each index table is accompanied by a PDS label, DDRyymm_INDEX.LBL, that 
describes the format of the table.

The index tables are ASCII text files. Each line (record) in
DDRyymm_INDEX.TAB contains information about a data product in the
archive. The record includes the path and file name of the PDS label
that describes the data product. 

Each line in DDRyymm_INDEX.TAB consists of a set of fixed-length fields
delimited by commas. DDRyymm_INDEX.LBL tells the start byte, number of
bytes, and data type of each field. Character fields are enclosed in
double quotation marks (").