448 



Fishery Bulletin 102(3) 



A 



50 100 150 200 250 300 350 400 450 500 550 600 650 



100 200 300 400 500 600 700 800 900 1000 



50 100 150 200 250 300 350 400 450 500 550 600 



50 100 150 200 250 300 350 400 450 500 550 600 



E 



100 700 300 400 S00 600 700 



SO 100 ISO 200 2S0 300 3S0 400 4S0 500 



Perpendicular distance (m) 



Figure 5 



Histograms of perpendicular sighting distances, and their fitted detection functions as used to 

 estimate effective strip width. /; = number of sightings. The fitted model (hazard, cosine, uniform, 

 or half normal) and any adjustments to it (cosine or none) are given in brackets. (A) 1997-98 har- 

 bors and bays (n = 71; hazard/cosine); (B) 1997-98 open coasts U?=75; uniform/cosine); (C) 1998-99 

 open coasts (re=121; half-normal/cosine); (D) 1998-99 helicopter sightings (/i = 58; half-normal i; (Ei 

 1998-99 duplicate sightings (n = 33; uniform/cosine); (F> 1999-2000 harbors and sounds (ra=70; 

 hazard/cosinei; (G) 1999-2000 open coasts (n = 89; uniform/cosine). 



