RETURN PERIOD IN YEARS 

 5 10 20 40 60 



^ 40.0 - 



? 20.0 - 



0.0 



50.0 80.0 90.0 95.0 98.0 99.0 



CUMULfiTIVE PROBABILITY SCALE 

 EXTREMAL TYPE I 



Figure C15. Gulf of Alaska, 24-hr averages 



50.0 



40.0 - 



30.0 



20.0 - 



RETURN PERIOD IN YEARS 

 5 10 20 40 60 



100 



10.0 



1.0 



50.0 80.0 90.0 95.0 98.0 99.0 



CUMULATIVE PROBABILITY SCALE 



EXTREMAL TYPE I 



Figure Cl6. Gulf of Alaska, 27-hr averages 



C9 



