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 TRDR data product 
in the archive. The index tables are organized by month and are of the form 
TRDRyymm_INDEX.TAB. Each index table is accompanied by a PDS label, 
TRDRyymm_INDEX.LBL, that describes the format of the table. When a month is 
split across volumes, the DOY range is appended to the index table name 
(e.g., TRDR0808_214_221_INDEX.TAB contains a list of TRDRs from DOY 214 
through 221 in August 2008. August 2008 TRDRs for DOY 222+ can be found on 
the next volume in TRDR0808_222_244_INDEX.TAB).

The index tables are ASCII text files. Each line (record) in
TRDRyymm_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 TRDRyymm_INDEX.TAB consists of a set of fixed-length fields 
delimited by commas. TRDRyymm_INDEX.LBL tells the start byte, number of 
bytes, and data type of each field. Character fields are enclosed in double 
quotation marks (").