INFORMATION FOR BODC SERIES REF. NO.    33877                  
                                                                                
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                         Sea Floor Pressure Gauge Inventory Number :   6927     
                                                                                
 Start Time : 21 Mar 1977 0744 GMT                  Latitude  :  53deg 46.2min N
 End Time   : 16 Apr 1977 1224 GMT                  Longitude : 004deg 08.1min W
                                                                                
 Nominal Cycle Interval   :  600.0 secs         Sensor Depth    :     48.00m    
                                                Sea Floor Depth :     48.00m    
                                                                                
 Positional Uncertainty   : 0.1 to 0.5 n.miles                                  
 Depth Datum              : Instantaneous                                       
                                                                                
 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  : 772/977/080                                         
                                                                                
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 Additional information stored with the data:                                   
                                                                                
    Station 12, Irish Sea.                                                      
    Clock gained 10 seconds over 60 days, 21.5 hours; the  cycle  interval  and 
    time values have been corrected.                                            
                                                                                
    Instrument characteristics and calibration factors                          
    Aanderaa Current meter/Pressure recorder, logger 1507, sensor DIG 5/1       
           Original sampling interval          10 minutes                       
           Integration period                        600s                       
           Pressure sensitivity at 8degC      0.1568Hz/mb                       
           To convert pressure to elevation the following                       
           values should be used:                                               
           Density (from CTD casts)         1026.881kg/m3                       
           Gravitational acceleration constant  9.814m/s2                       
                                                                                
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 The following additional documents apply to this series:                       
                                                                                
  27731; I.O.S. Calibration and Data Processing of Off-Shore Tide Gauge Data    
  27793; Aanderaa Current Meter/Pressure Recorder                          
                                                                                
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