not be real, but, in any case, the location of the 

 modes of these small groups may not be repre- 

 sentative of the population. By using absolute 

 rather than percentage deviations, by adhering 

 to the criteria for distinguishing a mode given 

 earlier in this report, and by omitting the 

 livebait-caught fish used by Moore it was im- 

 possible to find significant modes in every 

 month of the year for any individual year. For 

 these reasons and in view of the relatively small 

 interyear variation, it was decided to combine 

 all years by months. 



1948-1953. From April through October only a 

 single mode can be clearly identified, but from 

 November through March two modes are in 

 evidence and in January there is an indication 

 of a third. During February and March there 

 are abbercint modes at 145 and 140 pounds 

 respectively. These probably reflect the 

 erratic positions of the modes in the very 

 small samples which were combined to make 

 up this size distribution. 



Figure 6 illustrates the distributions of 

 weights by months obtained by combining all data, 



I I I I I I I I I I 



JUNE 

 N.2672 



JULY 

 N = 2993 



100 120 140 160 180 200 220 240 260 280 

 I I I I I I I I I I I I I I I 



9 29 49 69 89 109 129 149 169 189 209 229 249 269 289 



WEIGHT IN POUNDS 



Figure 4. --Percent deviations of Hawaiian 

 yellowfin weight-frequency distributions 

 for individual months from a 4-month mean 

 (June through September) averaged over 5 

 years (1948-1952). 



T \ I I I I r 



I I I I I I I I 



JANUARY 

 N'39 LONGLINE 

 N=7 LIVE-BAIT 



FEBRUARY 

 N=73 LONGLINE 

 N = 3 LIVE-BAIT 



MARCH 

 N = 20 LONGLINE 

 N = I LIVE-BAIT 



APRIL 

 N = 67 LONGLINE 

 N = I4 LIVE-BAIT 



MAY 



N = I58 LONGLINE 

 N = 39 LIVE-BAIT 



SEPTEMBER 

 N = 165 LONGLINE 



OCTOBER 

 N=I02 LONGLINE 



NOVEMBER 

 N = 3I LONGLINE 



DECEMBER 

 N = 67 LONGLINE 



I I I I I I I I I I I I I I I I ii~T~i r~i I I I I I 



20 40 60 BO 100 120 140 160 180 200 220 240 260 



I I I I I I I I I I I I I I 



9 29 49 69 89 109 129 149 169 189 209 229 249 269 



WEIGHT IN POUNDS 



Figure 5. --Monthly weight-frequency distribu- 

 tions of Hawaiian yellowfin for 1949. Data 

 taken from Moore (1951:147). 



