NOTES ON THE TABULATED DATA 



In every case, any variation from the standard 13-bottle cast has been explained 

 in a footnote. 



Where more than one cast was made on a station, they are divided in the observed 

 data by a horizontal liae. The later casts are the deeper ones except on station 34, where a 

 single bottle was recast. 



Where the corrected paired protected thermometer readings differed by more than 

 0.05 C, the depth and salinity are repeated, and both temperature values are carried. Sigma-t 

 values calculated using each temperature are tabulated. 



Where the duplicate determinations of inorganic phosphate differ in extinction value 

 by more than 0.01 (approximately 0.05 (ig at/l), the depth is repeated, and both phosphate 

 values are carried. 



Weather is recorded in the ww (present weather) code given in the U. S. Weather 

 Bureau Circular M, eighth edition, Manual of Marine Meteorological Observations. Cloud 

 coverage is given in tenths of sky. 



Wind velocity was measured with an anemometer 30 meters above the sea surface. 

 The direction (given to the nearest 10 ) is that from which the wind was blowing, measured 

 clockwise through 360 from north. 



No phosphate determinations were nnade from station 6 to station 16, and no data 

 interpolated at standard depths for dynamic computations after station 19 (see text). 



19 



