KAN 

 180,000 



160,000 



140,000 



120,000 



100,000 



80,000 



60,000 



40,000 



20,000 



lopoo 



BLACK TUNA CATCH 

 BROADBILL CATCH X 10 

 WATER TEMPERATURE 



- 18 



17 



16 



JUNE. 



J L 



_L 



_1_ 



_1_ 



J I I L 



20°C 



19 



14 



13 



m JULY 10 n AUG I m sept id m oct i d m nov i d m 



10 



Figure 2. Ten-year overages (1922-31) of blofk-tuna and broadbcll catches (by lO-doy periods) and 

 surface water temperature (10 to 50 miles). 



29 



