1966 



1967 



1968 



1969 



1970 



I 





z 



52 



LU 





DC 



50 



X 





< 



dS 



u_ 





<•) 



46 



LU 





LU 



id 



ae. 





O 



d2 



LU 





Q 







dO 





38 





36 





3d 



\ 



A 



/\ 



/ 



/ 



V 



/ 



A 



\ 



\ 



JFMAMIJASOND JFMAMJJASOND JFMAMJJASOND JFMAMJJASOND 



MONTHS 



JFMAMJJASOND 



Figure 8. — Mean surface water temperatures, recorded from 10 dealer locations each month of the survey, 



1966 (partial year) through 1970. 



1968 



3 - 7 - 



x 



(period 3) 



.5- 



(PERIOD l) 



< 



o 



AprH 



(period 2) 



July 



I J 



A A Jo J„ X J 1 1 1 1 



30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 

 SURFACE WATER TEMPERATURE (°F) 



Figure 9. — The relationship between mean ocean surface temperature and catch 

 in numbers per trap-haul by month for 1968. 



33 



