Frequency ( percent) 
Frequency (percent) 
IGHTSHIP 
-4 -3 -2 -1 ie) 1 2 3 4 5 6 7 
Deviation (feet). Hindcast height less observed height 
FIG.8a. FREQUENCY OF HEIGHT DEVIATION- HINDCAST LESS OBSERVED 
8 9 
NANTUCKET LIGHT:SHIP 
-3 -2 -l (e) 1 2 3 4 5 6 7 8 
Deviation (sec.) Hindcast period less observed period 
FIG. 8b. FREQUENCY OF PERIOD DEVIATION-HINDCAST LESS OBSERVED 
13 
