to 

 "D 



c 

 o 

 (/) 



3 

 O 



-C 



X 



o 



< 



o 



4 



PACIFIC SARDINE 



DAY INDEX 



> NIGHT INDEX 



TOTAL CATCH 



NO DATA 

 JUNrDEC. 



- I 



.0 



LU 



> 



UJ 



0.5 



x 



UJ 

 Q 



1963 64 65 66 67 68 69 70 71 72 73 74 



YEAR 



Figure 19. — Pacific sardine index values in arbitrary units for day and night observations and total California catch. 



0.0 



32 



