by reference identity niimber. A cruise master card bearing information 

 common to the cruise as a whole, as well as codes indicating observational 

 techniques and accuracy, eventually will be provided for each cruise. 

 The format of this card is now being developed by NODC on the basis of 

 comments and suggestions received from the oceanographic community. 



To fa,cilitate card punching, all data are coded or transcribed onto 

 the NODC "Physical and Chemical Data Form for Oceanographic Stations," 

 NODC form NHO-NODC-3167/I (9-61), which contains space for coding the 

 station Master Card information and for coding physical and chemical 

 information at 25 observed depths. The entries on this form are arranged 

 in the same order as they appear on the punch card (decimal places are 

 marked by dots). The shaded portion of the form is for information to 

 be filled in by NODC only. Some columns are left out on the portion of 

 the form which corresponds to the detail card; these data are always 

 machine reproduced or comptited and do not need to be filled in by the 

 observer or coder. 



CODING THE MASTER CARD INFORMATION 



General instructions for entries on the data form: 



1. Use standard rounding procedures whenever rounding is necessary. 



Example: > 5 ad-d one (l) to preceding column 

 < 5 drop 



5 round to nearest even number 



