7\ 



7.46 



■S 40 



c 

 o 

 (/) 



ZJ 



o 



X 



o 

 o 



PACIFIC MACKEREL 



— DAY INDEX 



• NIGHT INDEX 



TOTAL CATCH 



NO DATA 

 JUN.-DEC. 



69 71 73 75 

 YEAR 



/ 



i 



i 



3.0 



Figure 37.— Pacific mackerel index values in arbitrary units for day and night observations and total California catch. 



49 



