INFORMATION FOR BODC SERIES REF. NO.    34291                  
                         Sea Floor Pressure Gauge Inventory Number :   6967     
 Start Time : 08 Aug 1980 1030 GMT                  Latitude  :  43deg 06.3min N
 End Time   : 06 Dec 1980 1729 GMT                  Longitude : 035deg 11.1min W
 Nominal Cycle Interval   : 3600.0 secs         Sensor Depth    :   3515.00m    
                                                Sea Floor Depth :   3515.00m    
 Positional Uncertainty   : 0.1 to 0.5 n.miles                                  
 Depth Datum              : Mean sea level                                      
 Data Category            : Offshore sea floor pressure series                  
 Instrument Type          : Tide gauge (unspecified)                            
 Instrument Mounting      : Sea floor - fixed                                   
 Originator Laboratory    : Proudman Oceanographic Laboratory, Bidston, UK      
 Originator's Identifier  : 8015/980/221                                        
 Additional information stored with the data:                                   
    Station A3, North Atlantic.                                                 
    Sampling was every 30 minutes, alternate pressure and temperature readings. 
    For temperature correction, temperature was calculated as a mean of the two 
    adjacent temperatures for each pressure frequency.  Clock gained 42 seconds 
    over  137  days,  17.5  hours; the cycle interval and time values have been 
    Instrument characteristics and calibration factors                          
           Aanderaa Pressure Recorder TG-4A, sensor DIG, serial number 282      
           Original sampling interval          60 minutes                       
           Integration period                         27s                       
           Temperature coefficient       14.32counts/degC                       
           Pressure sensitivity           0.3441counts/mb                       
                                           (at 0.964degC)                       
           To convert pressure to elevation the following                       
           values should be used:                                               
           Density                           no CTD casts                       
           Gravitational acceleration constant  9.804m/s2                       
 The following additional documents apply to this series:                       
  27731; I.O.S. Calibration and Data Processing of Off-Shore Tide Gauge Data    
  27823; Aanderaa Pressure Recorder Type TG-4A