Table 1. — Observations at NORPAC stations, HMS Cr. 30 



AEC RS - Atomic Energy Coram, radioactivity SIO PP 



sample 

 J RS - Japanese radioactivity sample SIO RS 



MWT -\«a>30-:neter midwater trawl 

 ML - Night light SD 



P - lliO-meter plankton tow SVC 



PS - Shallow plankton tow - depth in WHOI DEUT 



meters 



- Number of Scripps Inst. Ocean. 



phytoplankton samples 



- Scripps Inst. Ocean, radio- 



activity sample 



- Secchi disc - depth in meters 



- Forel scale water color 



- Number of Woods Hole Ocean. 



Inst. Deuterium samples 



- Observation taken 



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