INSTRUCTIONS FOR PUNCHING NODC OCEMOGRAPHIC STATION CARDS 

 (See Appendix II, Page 115, for sample Oceanographic Station Card. ) 



In general, the Physical and Chemical Data Form for Oceanographic 

 Stations is arranged in such a manner that most of the numeric and alphabetic 

 entries can be punched directly into the corresponding columns of the punch 

 card. The alphabetic punch code used at the NODC is the standard letter 

 punch code shown below. 



STANDARD LETTER PUNCH CODE 



Letter Punch Letter Punch Letter Punch 



Question marks in Columns 32, 37^ and k2 of the Detail Cards are punched 

 as the letter Q in the same column. 



The correct entry and location for certain 12 and 11 punches cannot 

 readily be determined from the data fonn. For this reason, the correct entry 

 and location for these punches are given in the special punching instructions 

 below. 



15 



