FREQUENCY, TYPE 2 



STATE OF THE SEA 



IGURE 20. FREQUENCY OF STATE OF THE SEA AT THE LIGHTSHIP AMRUMBANK 

 IN THE STORMY WINTER OF 1936-37. 



FREQUENCY, TYPE 2 



FIGURE 



200 300 



WAVE HEIGHTS-CENTIMETERS 

 21. FREQUENCY OF WAVE HEIGHTS AT THE LIGHTSHIP AMRUMBANK IN THE STORMY 

 WINTER OF 1936-37. 



23 



