♦DT/SVD 



WATER COLOR 

 TRANS, (m) 

 WIND 



DIR. 



SPEED OR FORCE 



BAROMETER (mbs) 

 AIR TEMPERATURE ° 



DRY BUL 



WET BULB 

 VIS CODE 



NUMBER OBS, LEVEL 

 SPECIAL 



OBSERVATIONS 



This indicator specifies that the reported data have been obtained electronically rather 

 than by Nansen-type casts. U (up) and D (down) are cast indicators for electronically 

 obtained serial data and specify that the data were taken while hoisting or lowering 

 respectively. 



Water color according to Forel-Ule Code. 



Water transparency in meters as determined by Secchi disc. 



Direction from which wind is blowing in tens of degrees, according to WMO Code 0877. 

 If preceded by letter S, wind speed in knots; if preceded by letter F, wind force in 

 Beaufort code. 



Barometric pressure in millibars ; tens, units, and tenths places only. 



Dry bulb air temperature in degrees centigrade, to tenths. 



Wet bulb air temperature in degrees centigrade, to tenths. 



Visibility according to WMO Code 4300. 



The number of observed levels associated with the station. 



Entries in this space vary with individual cruises or stations. Information concerning 



entries in this field can be requested from the NODC. 



A complete description of the codes can be found in NODC publication M-2 (Rev, August 1964), 

 "Processing Physical and Chemical Data from Oceanographic Stations." 



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