12 
SIGNIFICANT WAVE HEIGHT 
HÖRNUM SYLT 
APR MAY 
1988 1988 
ENERGY-MAXIMUM FREQUENCY 
HÖRNUM SYLT 
•OH 1 , 1 r 
1 2 i 4 S 
APR 
1988 
~7 ! r r r T T 1 T 1 r T 1 1 r r 1 r 1 1 1 1 1 f—' V 
6 7 8 9 10 11 12 13 14 15 16 17 18 18 20 21 22 2J 2* 25 28 27 28 29 30 1 
MAY 
1938