Depth (m). Depth in meters of the sample or standard depth. The prefix 

 letter T indicates at least one unprotected thermometer was used to determine 

 the observed depth and that the computed thermometric depth was within +0.5% 

 of the accepted observed depth. Accepted depths are determined by L-Z curve 

 methods described in publication H.O, 607. A suffix letter Q indicates the 

 originator considers the value to be doubtful and the letter P indicates 

 NODC considers the value to be potentially implausible. 



T°C. The Celsius (°C) temperature is given in degrees to the nearest 

 hundredth. (For the Q and P notation see Depth above). 



S %o . Salinity is given in parts per thousand (by weight) to two decimal 

 places. (For the Q and P notation see Depth above). 



Sigma-T. Sea water density expressed as °"t to hundredths. To convert to 

 density divide by 1000 and add 1.000. Thus a°"t value of 22.35 converts 

 to a density of 1.02235. When depth, temperature, salinity, or any combi- 

 nation of these is doubtful, Q is suffixed. 



Specific Volume Anomaly -10 7 . Specific Volume Anomaly in (cm 3 /gm) X 10 7 . 

 Appears at standard depths only. 



ZAP Dyn. M. X 10 3 . Dynamic depth anomaly in dynamic meters X 10. Appears 

 at standard depths only. 



Sound Velocity. In meters per second to the tenth of a meter according to 

 Wilson's formula. 



O2 ml/1. Dissolved oxygen in milliliters/liter to hundredths. Q indicates 

 a doubtful value. 



P0 U -P. Inorganic phosphate in microgram-atoms of P per liter to hundredths. 



Depth (Ft.), Temp. (°F), and Sound Velocity ft/sec. These 3 columns give 

 the english equivalents for the depths, temperatures, and sound velocities 

 recorded in metric units to the left. The spaces used for these conversions 

 ordinarily contain additional chemical observations which were not obtained 

 on this cruise. 



SCC A numeral appearing in this column is an Optional Chemistry Code. 

 The optional chemistry fields are numbered from left to right beginning 

 with P0^-P= 1 through p H= 6. The code numeral indicates that the entry in 

 the respective field in NOT as given on the template. (A special template 



1 



U. S. Hydrographic Office, Instruction manual for oceanographic observations, 

 Hydrographic Office Publication No. 607, 2nd ed. , 210 p., 1955. 



WILSON, W. D. , Equation for the speed of sound in sea water, Journal of the 

 Acoustical Society of America, vol. 32, no. 10, pp. 1357, Oct. 1960. 



49 



