Column 80 CARD TYPE 



For observed sample depths (including those falling at standard depths), 

 enter the numeral 3 in Column 80 to indicate an Ohserved Depth Card. If 

 an originator wishes to code his own interpolated standard depths, the 

 numeral 7 is entered in Column 80 on the data form for each individual 

 interpolated standard depth. (Computed items such as sigma-t, sound velocity, 

 dynamic depth anomaly,, etc. will be computed for this type of card, but 

 computations will be based on the values as reported by the originator. ) 

 In a few instances only interpolated data may be available for certain 

 cruises and/or stations. In these instances, the numeral h is entered in 

 Column 80. Such a card will be treated by the computer as though it were 

 an observed level. 



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