THE COMPUTED DATA CARD 



An outline of the format of the Computed Card is included in 

 this manual in order to acquaint the users of the NODC oce-^jiographic 

 station data holdings with the end product of the routinely performed 

 computations. (A detailed description of formulas and techniques 

 used for Interpolations and computation of various parameters will be 

 described in a future NODC publication in the General Series.) 



The manually punched cards described in the previous section are 

 used as data cards for the NODC computer. The end product of the 

 computation process is a new set of cards referred to as the Computed 

 Cards. There are two types of Computed Cards. One type contains 

 computed parameters as well as the original observed information. The 

 other type contains computed values only and is generated for all 

 standard depths; this card carries the interpolated values of temperature, 

 salinity, and oxygen as well as certain additional parameters which 

 are computed for standard depths only. 



The routinely computed parameters which appear on each type of 

 Computed Card are as follows: 



NAME OF CARD TYPE COMPUTED PARAMETER 



Computed Master Card* Marsden square number 



Computed Observed Card* 1. Sigma-t (<7t ) 



2. Sound velocity (ft, /sec.) 



*Code indicators for each card type are given in table on Page 21. 



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