Table 14a and b shows the relationship between surface water 



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temperature and catch rate in the area of 170 E. to 180 . 



Table 14a. --Surface temperature and catch 

 rate, December, 30°N.-35°N., 170°E.- 

 180° 



Table 14b. --Surface temperature and catch rate, December 35 N. - 

 40°N. , 170°E.-180° 



Average water temperature where fish were taken, 17.9 C. 



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For the waters between 30 N. and 35 N. little difference in the 



catch rates is shown within the rsinge of 1 7 to 21 C. , and modes can be 

 seen at 17°-18°C. and at 19°-20°C. 



At 35 N. to 40 N. the range of change in water temperature is 

 narrow, and catch rates are generally shown to be high within the range 

 of 17 to 20 C, with a mode appearing at 17 -18 C. 



Comparing the relationships between catch rates and surface water 

 temperatures over the whole area of 140 E. to 180 , we find: 



1. Between 30 N. and 35 N. the nnodes appear as follows: 



a. At 19°-21°C. between 140°E. and 150°E. 



b. At 18°-19°C. and at 20°-21°C. between 150°E. and 160°E. 



c. At 18°-19°C. between l60°E. and 170°E. 



d. At 17°-18°C. and at 19° to 20°C. between 170°E. and 180°. 



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