ENTRY 



DESCRIPTION OF FIELD 



T °C 



Temperature in degrees centigrade to hundredths; 

 a thousandths place appears as a fifth numeral. 

 (For Q or P notation, see Depth field. ) For 

 alphabetic precision entry, see Table 28. 



O 7oo 



Salinity in parts per thousand (ppt) to hundredths 

 of ppt. A thousandth of a ppt appears as a fifth 

 numeral. (For Q and P notation, see Depth field. ) 

 For alphabetic precision code, see Table 28. 



SIGMA- T 



Sea water density expressed as sigma-t (a^ ) to 

 hundredths (g/l-lOOO). When temperature and/or 

 salinity is marked doubtful, P, Q, or * is 

 suffixed to a^ . 



Specific volume 

 anomaly - X 10' 



Specific volume anomaly in (cm^/gm) X lO''. 

 Appears at standard depths only. 



ZAD 



Dynamic depth anomaly in dynamic meters X 10 . 

 Appears at standard depths only. 



In meters per second to tenths of a meter, 

 according to Wilson's formula. 



NOTE: 



In the following designations, the character "1" stands 

 for a small letter "L" denoting liter. 



Oa ml/l 



Oxygen in ml/l to hundredths. Q indicates 

 doubtful value as determined by either the 

 originator or the NODC. 



PO4-P 

 p,g-at/l 



Inorganic phosphate in mlcrogram-atoms per 

 liter of P to hundredths. 



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