OCCURRENCE OF BIRDS, AQUMIC 

 MAMMALS a FISH SCHOOLS LOG 



6 7 8 9 



I I 



2 13 



4 15 



Figure 3._Log used to record visual observations of tuna schools, birds, and aquatic 

 mammals, 1961 to present 



HANDLING OF DATA 



By 1960 the amount of data included in the 

 bird flock-fish school logs, as well as in other 

 observational logs, had become so large as to 

 make it inefficient to prepare summaries using 

 hand sorting and computing methods. Because of 

 this aprogram was begun to place all Laboratory 

 data on IBM punched cards. Figure 4 shows the 

 format used, as well as the items entered on 

 these cards, for the bird flock-fish school obser- 

 vations. 



Data pertinent to the sighting of each bird 

 flock and fish school. Including the exact position, 

 were placed on a separate card, using card col- 

 umns 1-45 and 62-67. The number of hours 

 watched, i.e. scouting time, together with data 



on numbers and types of scattered birds and 

 aquatic mammals seen, were entered on other 

 cards, using columns 1-28, 46-61, and 68-74. 

 Such cards were prepared for each of the four 

 daytime ship's watch periods — 0400-0800, 0800- 

 1200, 1200-1600, and 1600-2000 hours--in which 

 there was some scouting effort. The position 

 assigned to these observations was the position 

 of the vessel at the end of the watch period. 



Summaries of portions of the data contained 

 in the card decks were prepared for discrete time 

 and area units using standard IBM accounting 

 machines. The time-area units used were periods 

 of one calendar month and the areas measured 

 1 degree of latitude by 1 degree of longitude. For 



