AIR TEMPERATURE °C: 



DRY BULB Dry bulb air temperature in degrees centigrade, to tenths. 



WET BULB Wet bulb air temperature in degrees centigrade, to tenths. 



VIS CODE Visibility according to WMO Code 4300. 



NUMBER OBS, LEVEL The number of observed levels associated with the station. 



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

 TIONS. entries in this field can be requested from the NODC. 



2. 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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