■170- 



80 



60 



T 1 1 1 ! r 



NORTH OF 15* N. 



20 



1 



J_ 



_L 



_L 



_L 



_L 



_L 



_L 



61 62 63 64 6^ 66 67 



68 69 70 711 72 7? 74 75 76 

 YEAR 



78 



Figure 4. Estimated CYRA catches of skipjack north and south of 15° N, 

 1961-1978. 



