OBSERVED DEPTH CARDS (NUMERAL 3 OR 4 IN COLUMN 80) 



Location of Entry 

 In Punch Card 



Column 8 



Column Ik 



Column 15 



Column 31 

 Column 36 

 Column U6 

 Column 51 

 Column 53 



11 Punch and Purpose 



11 punch to Indicate South latitude. 



11 punch to indicate East longitude. 



11 punch to indicate that according 

 to originator, extensive drift 

 occurred while on station. 



11 punch to indicate a thermometric 

 depth. 



11 punch to indicate a negative 

 temperature. 



11 punch generated by the computer 

 to indicate a negative sigma-t (a^). 



11 punch acts as a control punch so 

 that 10 is added to the oxygen value. 



11 punch to Indicate doubtful oxygen. 



STANDARD DEPTH CARDS (NUMERAL 6 OR 7 IN COLUMN 80 ) 



Location of Entry 

 in Punch Card 



Columns 8, Ik, 15, 3^, kG, 

 51, and 53 



Column 59 



Column 63 



11 Punch and Purpose 



Same as Observed Depth Card. 



11 punch generated by the computer to 

 indicate a negative specific volume 

 anomaly. 



11 punch generated by the computer to 

 indicate a negative dynamic depth 

 anomaly. 



19 



