Figure 4. -Format of punch card and Items of information concerning the results of visual 

 scouting entered on cards 



each such unit the following items were summed 

 and printed: 



1. Number of bird flocks (total and by four 

 size categories) 



2. Number of schools of fish (skipjack, 

 yellowtln, skipjack-yellowfin mixed, flying fish, 

 unidentified fish, and total fish schools) 



3. Total schools with and without accom- 

 panying bird flocks 



4. Skipjack schools with and without bird 



flocks 



5. Bird flocks without schools of fish 



6. Number of hours watched (total and by 

 each of four watch periods) 



data were not available to permit an ocean-wide 

 summary based on such small units. Because of 

 this the data were combined into larger time-area 

 units of 3 months and 5° X 5° areas. The quarterly 

 periods selected were December-February, 

 March-May, June-August, and September-No- 

 vember. This grouping was chosen so that June, 

 July, and August, the months during which maxi- 

 mum catches are made In the Hawaiian skipjack 

 fishery, would comprise one quarter. The 5° x 5° 

 areas were chosen arbitrarily by starting at the 

 Equator and longitude 110° W., the eastern bound- 

 ary of the summary area, and proceeding by 5° 

 increments of latitude and longitude northward 

 and westward in the Northern Hemisphere and 

 southward and westward in the Southern Hemi- 

 sphere. Areas in the Northern Hemisphere were 

 designated by the latitude and longitude of the 

 southeast corner and in the Southern Hemisphere 

 by the northeast corner of the 5° square. 



7. Number of scattered birds by type (This 

 number is coded and is only an approximation 

 of the real numbers observed.) 



This report summarizes only a portion of 

 the above items, viz., (1) total bird flocks, 

 (2) total fish schools, (3) skipjack schools, 

 (4) total yellowfin schools, and (5) total number 

 of hours watched. 



An examination of the degree-month sums 

 for these categories indicated that sufficient 



Within each 3-month-5°x 5°time-area unit 

 four items were summed- -number of bird flocks, 

 number of skipjack schools, number of schools 

 of all fish, and number of hours scouted. From 

 these figures the rates of sighting were computed 

 in terms of numbers of flocks or schools sighted 

 per 10 hours of scouting. 



For the area outside of the hatched portion 

 of figure 1, but within the broken lines, only 

 summaries for quarters of the year are presented 

 (table 2). 



