Columns 38-42 SALINITY 



Enter salinity in parts per thousand to hundredths in Columns 38-^1; 

 Column U2 may be used for entering an additional (thousandths) decimal^ a 

 precision indicator coded according to Table 28, or a doubtful data indi- 

 cator (?). Table 29 converts chlorinity to salinity. 



Columns 4 3- 50 do not appear on the data form. On the punch 

 card these columns are reserved for computed sigma-t (a^ ) and 

 sound velocity. Sound velocities measured by a velocimeter 

 (or temperatures or salinities based on these measurements) 

 should be forwarded or coded separately. 



Columns 51-53 OXYGEN 



Enter oxygen in milliliters per liter (ml/l) to hundredths in Columns 

 51-53. (if determined to tenths only leave Column 53 blarik. ) Table 30 

 converts milligrams per liter (mg/l) and Table 31 converts milligram-atoms 

 per liter (mg-at/l) to ml/l. To record oxygen values greater than 9*99 ml/l 

 enter two numerals (tens and units) in Column 51- 



Columns 5^-71 CHEMISTRY 



Columns 5^-71 are intended for entering the additional chemistry fields 

 described below. These are the only chemistry entries which will be punched 

 routinely. A chemistry card to record chemistry other than that shown below 

 is being developed at the NODC. However, provisionally any chemistry may 

 be substituted in any one of the fields provided that: 



1. It can be reported in a three digit field. 



2. The proper code in Table kl is entered in Column 72 to indicate 

 the field in which the substituted chemistry is entered, 



3. The nature and units of the substituted chemistry are fully 

 described in the Remarks space of the data form. 



Columns 5^-56 PHOSPHATE 



Enter inorganic phosphate in microgram-atoms per liter (ij,g-at/l) to 

 hundredths. Conversions from other units are shown in Tables 32-34- 



12 



