readings if any. A scatter diagram with regres- 

 sion data are printed out and a second and final 

 Set I is printed with corrections showing esti- 

 mated meter readings, volumes of water 

 strained, and the SHF derived from them. 



Note: A scatter diagram and regression data are pre- 

 pared whether needed or not in order to present a visual 

 record of meter behavior during a cruise. 



The final step in standardizing the data is to 

 multiply all counts of eggs and larvae from each 

 plankton tow by the standardized haul factor 

 (Fig. 30) . The standardized counts are filed on 

 species cards by cruise and station. Measured 

 larvae are standardized by numbers per size to 

 the nearest one-half millimeter, then grouped 

 in size classes, e.g., Kramer (1971). Sardine 

 eggs are standardized by stage of development 

 and totaled in "Age in Days" (see Step IV in 

 identification of eggs and larvae) , e.g., Kramer 

 (1971). 



For ADP a coding system is used now to stand- 

 ardize the data. A number (code) is assigned 

 to each fish larva, sized or unsized, as far as pos- 

 sible to order, family, genus or species (Fig. 31) . 

 The code numbers are added to the identifiers 

 sheet as shown in Figure 32, and the key punch 

 operator puts the following information on a 

 card for each species: cruise number, station 

 number, larva or egg code number, and the stand- 

 ard haul factor. 



These data are then stored on tape for retriev- 

 al for analysis and/or publication. 



Data Publication 



The data for each year of surveys are compiled 

 for publication in two series. The first is "Zoo- 

 plankton volumes of the Pacific coast " the 



old Sets III (now Set II by ADP) for each sur- 

 vey, e.g., Thrailkill (1969). The second is "Sar- 

 dine eggs and larvae and other fish larvae of 

 the Pacific coast, . . .," which include the stand- 



ardized haul factors for all stations occupied on 

 each survey and positive occurrences of partic- 

 ular species as follows: Pacific sardine eggs by 

 age in days, fish larvae by size classes including 

 Pacific sardine, northern anchovy, jack mackerel 

 and Pacific mackerel, and fish larvae unsized, 

 including Pacific hake and rockfish spp., e.g., 

 Kramer (1971). 



ACKNOWLEDGMENTS 



Sincere appreciation is extended to all person- 

 nel and organizations without whose cooperation 

 the exacting procedures and extensive work of 

 the CalCOFI could never be accomplished. 



LITERATURE CITED 



Ahlstrom, E. H. 



1948. A record of pilchard eggs and larvae col- 

 lected during surveys made in 1939 to 1941. U.S. 

 Fish Wildl. Serv., Spec. Sci. Rep. 54, 76 p. 

 1950. Influence of temperature on the rate of de- 

 velopment of pilchard eggs in nature. U.S. Fish 

 Wildl. Serv., Spec. Sci. Rep. Fish. 15: 132-167. 

 Kramer, D. 



1971. Sardine eggs and larvae and other fish larvae 

 of the Pacific coast, 1958 and 1959. U.S. Dep. 

 Commer., Natl. Oceanic Atmos. Admin., Natl. Mar. 

 Fish. Serv., Data Rep. 68, 132 p. 



Milne, A. 



1959. The centric systematic area sample treated 

 as a random sample. Biometrics 15(2) : 270-297. 

 Saur, J. F. T., and D. D. Stewart. 



1967. Expendable bathythermograph data on sub- 

 surface thermal structure in the eastern North 

 Pacific Ocean. U.S. Fish Wildl. Serv., Spec. Sci. 

 Rep. Fish. 548, 70 p. 

 Saur, J. F. T., and P. D. Stevens. 



1972. E.xpendable bathythermograph observations 

 from ships of opportunity. Mariners Weather 

 Log 16(1). 



Thrailkill, J. R. 



1969. Zooplankton volumes off the Pacific coast, 

 1960. U.S. Fish Wildl. Serv., Spec. Sci. Rep. Fish. 

 581, 50 p. 



GPO 985-323 



88 



