30 



25 



20 



I 

 »5 



15 - 



10 



5 -- 



Buzzards Bay Reference Station 

 Frequency Distribution 





KEY 



CLASS 



RANGE OF 



INTERVAL 



VALUES (CM) 



1 



0.0 - 0.6 



2 



0.6-1.0 



3 



1.0-1.4 



4 



1.4-1.8 



5 



1.8-2.2 



6 



2.2 - 2.6 



\ 7 



2.6 - 3.0 



8 



3.0 - 3.4 



9 



3.4 - 3.8 



10 



3.8 - 4.2 



11 



4.2 - 4.6 



N=27 



■ — i 1 1 1 h 



1 23456789 10 11 



Boundary Roughness Class Interval 



Figure 3-10. Frequency distribution of small-scale surface 

 boundary roughness for reference stations at BBDS, 

 March 1990. 



