NO. 10 STORM FREQUENCY IN THE UNITED STATES KULLMER 



Years selected 



1880-82 vs. 1886-88 

 1890-92 vs. 1899-01 

 1903-05 vs. 1909-11 

 1913-15 vs. 1920-22 

 1924-26 vs. 1930-32 



Mill. 



Max. 



Fig. 14. 



Test years 



1879-81 vs. 1886-88 

 1890-92 vs. 1898-00 

 1902-04 vs. 1910-12 

 1914-16 vs. 1920-22 

 1924-26 vs. 1931-33 



Fig. 15. 



