-47 



Biological Data 



Phytoplankton: depth (m) of chlorophyU a (mg/m''), 1, 0.46; 4, 0.41; 8, 0.65; 10, 1.0; 20, 0.62; 40, 0.46; 80, 0.17. 



Water column chlorophyll a: 40 mg/m^. Phytoplankton haul taken. 



Zooplanktom N-C N, o to 346 m, 2032-210G GCT, 270 ml T, 270 ml S; o to 302 m, 0150-0223 GCT, 314 ml T, 

 299 ml S. 



Nekton: o, depth missing, 0244-0348 GCT, 452 ml T. 



Night-lighting operations. 



STATION 50 

 (regular forenoon) 



May 14, 1958; 1700 GCT; 7°42'N, 88°08'W; 1840 fm; wind, 180° 

 partly cloudy; sea, moderate; wire angle, 23°; time zone G. 



force 1; temp. , 86. 9°F dry, 80. 9°F wet; weather, 



Submarine Daylight: 



a) Alternate value, 12.52°C, uncertain. 



b) Duplicate value, 3.42 |ig at/L. 



