Table 3. --Coefficient of variation of catch rate by latitude, 

 North Pacific ground 



Size of the fish 



Table 4 shows the size of the albacore taken in this area. The 

 table shows the average length and weight compositions for December 

 for the period from 1948 to 1951. 



Table 4. --Albacore size composition at 140 E.-150 E. in 

 December 1948-1951. 



Note: Size classes in cm, and in ( ) kan / 1 kan = 8. 27 lbs. /. 

 The figures in the columns are percentages. 



The average weight of the albacore taken in this area in December 

 is below 4 kan (33 lbs. ), and north of 34 N. it is less than 3 kan (25 lbs. ). 

 The modes of the length (weight) classes are located at 85 to 95 cm. (4. 1 

 kan ) south of 32 N. , and they appear 10 cm. to the left for every 2 one 

 goes toward the north, but north of 36 N. they are 1 cm. larger thctn they 

 are in the area between 34°N. and 36 N. The fish taken east of 150 E. 

 are all larger than in this area. The trend seen in November for the fish 

 to be larger in the south and smaller in the north is also clearly apparent 

 in December. 



36 



