53 



Biological Data 



Zooplankton: N-C N, o to 259 m, 0828-0901 GCT, 111 ml T, 104 ml S; H at m, 0838-0908 GCT, 404e ml T, 

 390e ml S. 



Nekton: o, depth missing, 0615-0720 GCT, 265 ml T. (Incomplete, net torn.) 



Night-lighting operations. 



STATION 62 

 (in situ productivity) 



May 19, 1958; 1156, 1733 GCT; 5°28'N, 77°46'W; 920 fm; wind, 240°, force 1; temp. , 81.2'Fdry, 77.0°Fwet; 

 weather, cloudy; sea, slight; wire angle, 13", 30°; time zone 5. 



Submarine Daylight: 



Phytoplankton: depth (m) of chlorophyll a (mg/m ), 1, 0.60; 5, 0. 60; 10, 1. 1; 25, 0,36; 50, 0. 12; 100, 0. 10; 150, 0. 12. 



Water column chlorophyll a: 35 mg/m . 



Zooplankton: N-C N, o to 301 m, 1516-1550 GCT, 80 ml T, 80 ml S; H at m, 1526-1556 GCT, 1329e ml T, 

 1329e ml S. 



C N, H at 50 m, 1418-1436 GCT, 60 ml T, 60 ml S; H at 17 m, 1451-1508 GCT, 195 ml T, 195 ml S; 

 H at 83 m, 1802-1818 GCT, 38 ml T, 38 ml S. 



a) Duplicate values: 312 m, 2. 87; 420 m, 3. 12 ng at/L. 



