barometer checked with the Weather Bureau, 

 coded in millibars. 



Wet and dry bulbs — Readings from 

 hygrometer. 



Physical, chemical data — All values 

 were plotted versus depth and checked by 

 T-S curves to avoid transcription errors, 

 before being punched on IBM cards similar 

 to those used by the Hydrographic Office. 



Depth - Depth in meters obtained by 



smoothed L-Z curve or in some 

 instances from the wire zmgle. 



Temp - Ten^eratures in degrees centi- 

 grade observed from reversing 

 thermometers read to 0.01* C. 

 Surface temperatures from 

 bucket samples read to 0.1" C. 



Sal - Salinity in parts per thousand 

 as defined from chlorinity. 



Oxy - Dissolved oxygen in milligram- 

 atoms per liter. 



0" t - Density, defined by (specific 

 gravity - 1) x 1000, computed 

 from temperature and salinity 

 by machine program. 



Interpolated Data 



These data are derived entirely from 

 observed data by a 3-point interpolation 

 routine devised by the University of Wash- 

 ington for the IBM 650. However, dummy 

 cards were inserted at 20 and 30 meters to 

 avoid the erroneous values obtained in the 

 mixed layer, due to the parabolic program 

 and the bottle spacing. Dummy cards were 

 inserted also to obtain the values at ex- 

 trapolated depths indicated by an asterisk. 



S (10^ f ) — Specific volume anomaly 



AD (dyn m) — Anomaly of dynamic height, 

 in dynamic meters, of the sea sur- 

 face relative to the indicated 

 depth in meters 



Plankton Data 



These data are presented as numbers 

 of organisms and as numbers of copepods per 

 cubic meter of water filtered, the efficiency 



of the net assumed to be 100 percent. The 

 total number of copepods is presented under 

 COPEPODA in the table of organisms. 



Analyses of samples (with the use of a 

 Folsom splitter) were conducted identically 

 to those of 1957 except that wet weights 

 were determined before obtaining the dis- 

 placement volumes. This additional measure- 

 ment was made in order to conform to methods 

 of presenting plankton data utilized by 

 other participating members of the Commis- 

 sion. 



Trawl data will be presented in a 

 subsequent report 



SUMMARIES OF OBSERVATIONS 



Sta Hydrographic station 



Set Gill-net set No. at this position 



GCT Median hour between messenger times, 

 in GCT (For median hour of plankton 

 hauls, see Plankton Data) 



Date Date of hydrographic cast 



Depth Interpolated depth in meters 



(Extrapolated depths indicated by 

 asterisks) 



Dl Stepped trawl from the surface to 

 50 m. 



D2 Stepped trawl from the surface to 

 100 m. 



D3 Stepped trawl from the surface to 

 150 m. 



