SHORT DESCRIPTION OF THE TERMS USED IN THE
HF RADIO PROPAGATION REPORT.

The following is extracted from the longer text. 


A letter/number scheme is used to describe the
observed/forecast propagation conditions within each area (block)
of the grid.  The literal part is a general description of
propagation quality within the area during the previous 6 hours,
using the following terms:
W = Poor, 
U = Fair, 
N = Normal.  

The numerical indicator is a prediction of general propagation quality
expected within the area for the next 6 hours, using the following
terms:  
1 = Useless 
2 = Very Poor 
3 = Poor 
4 = Poor to Fair
5 = Fair
6 = Fair to Good
7 = Good
8 = Very Good
9 = Excellent