STATION 60 



M/V Hugh M. Smith : Cruise 15, 9°00'N, I40°00'W., June 20, 1952. 

 Messenger time: 0741 GCT. Weather: 02, cloud coverage 3. 

 Wind: 040°, 13 kt. Sea: 5-8 ft. Wire angle: 02° 

 OBSERVED 



Notes on the tabulated data, Hugh M. Smith cruise 16 



All stations of this cruise consisted of shallow casts, with the bottle spacing varied to 

 give maximunn detail in the region of the thermocline. Any variation from a 13-bottle 

 cast has been explained in a footnote. 



On all stations, when the corrected readings of the duplicate protected thermometers 

 differed by more than 0. 1° above 300 M, or 0. 05 below 300 M, the depth of observa- 

 tion is repeated and both temperatures are Ccirried. Sigma-t values calculated using 

 each temperature are tabulated. Similarly, when the duplicate determinations of in- 

 organic phosphate for any depth differed by more than 0.01 extinction (approximately 

 0.04 p.g at/1), the depth of observation is repeated, and both values are carried. How- 

 ever, when one of either of the above duplicates was known definitely to be in error, 

 it was dropped from the tabulations. 



Weather is recorded according to the ww (present weather) code in the U. S. Weather 

 Bureau Circular M, 8th edition. Manual of Marine Meteorological Observations . Wind 

 velocity was measured with an anemometer 30 M above the sea surface; speed is re- 

 corded in knots, and direction is given in degrees true from whi?:h the wind was blowing. 



70 



