Count the number of obvious errors on WCAG1.0. Each number shows average 
errors on these top pages in September 2001.

Government and National Public sectors (36 sites):
 Priority-1 errors are 18.7 items.
 Priority-2 errors are 105.4 items.
 Priority-3 errors are 7.2 items.

Local self-government bodies (14 sites):
 Priority-1 errors are 45.0 items.
 Priority-2 errors are 104.3 items.
 Priority-3 errors are 19.5 

Universities (10 sites):
 Priority-1 errors are 15.4 items.
 Priority-2 errors are 57.5 items.
 Priority-3 errors are 8.6 items.

Private Enterprises (94 sites):
 Priority-1 errors are 51.4 items.
 Priority-2 errors are 147.4 items.
 Priority-3 errors are 11.2 items.