30 



STATION 17 

 (regular forenoon) 



May 1, 1958; 1745 GCT; 13°03'N, 110°44'W; 2230 fm; wind, 050°, force 3; temp, 

 weather, partly cloudy; sea, moderate; wire angle, 05°; time zone 7. 



83.1°F dry, 79. 0°F wet; 



Submarine Dayli^t: 



Alpha 



0.037 



Incident solar radiation: daily T 565 gm-cal/cm , day L 12. 65 hr. 



Biological Data 



3 

 Phytoplankton: depth (m) of chlorophyll a (mg/m ), 1,0. 066; 25, 0. 053; 50, 0. 074; 75, 0. 17; 100, 0. 36; 150, 0. 11. 



Water column chlorophyll a: 42 mg/m^. Pliytoplankton haul taken. 



Zooplankton: N-C N, o to 306 m, 1852-1925 GCT, 40 ml T, 40 ml S; H at m, 1900-1931 GCT, 8 ml T, 8 ml S. 



STATION 18 

 (regular night) 



May 2, 1958; 0700-0911 GCT; 11°14'N, 109°48'W; 2220 fm; wind, 030°, force 3; temp. , 86.0°F dry, 80. 0°F wet; 

 weather, 02; clouds, 2, arat. , 8; sea, 2; swell, 030°, missing; time zone 7. 



a) Duplicate values: 10 m, 0.30; 73 m, 0.51; 156 m, 2.77; 183 m, 2.74 jig at/L. 



