/* Description of directory structure */

Each data directory contains two files.  The first is the data file,
see the directory "FORMAT" for format of the data files.  The second
file is a header file which indicates what is in the associated data
record.

The naming conventions for these records is:

	dddhhmm.yy(w or L)
	
ddd is the day of the data.
 hh is the hour of the data.
 mm is the minute of the data.
 yy is the year of the data.
 
 w indicates that the record is a data record.
 L indicates that the record is a label record.