Table 1. — Intercepts (at 1949), slopes, intercept weights (1/variance of intercept), and 

 slope weight (1/variance of slope) used to derive the weighted average intercept and the 

 weighted average slope. These statistics are based on the intercept and slope of linear 

 regressions of average CPUE on year computed for peak fishing months and Marsden squares 

 within the Japanese North Pacific albacore longline ground 



Table 2. — Indices of magnitude of deviations from long-term trend obtained by approximate 

 integration of the deviations shown in figure 6 for December, January, February, and 

 March of each year, 1948-61 



1948 



1949 



1950 



1951 



1952 



1953 



1954 



1955 



1956 



1957 



1958 



1959 



1960 



1961 



5.5 



-7.1 



-32.4 



-7.5 55.5 



38.0 



6.5 



-24.5 



-30.2 



-8.5 11.6 -4.5 



-6.0 



10.5 



