INFORMATION FOR BODC SERIES REF. NO.    33712                  
                                                                                
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                         Sea Floor Pressure Gauge Inventory Number :   6944     
                                                                                
 Start Time : 01 Jun 1973 1500 GMT                  Latitude  :  47deg 45.0min N
 End Time   : 04 Jul 1973 1300 GMT                  Longitude : 007deg 12.0min W
                                                                                
 Nominal Cycle Interval   : 3600.0 secs         Sensor Depth    :    174.00m    
                                                Sea Floor Depth :    174.00m    
                                                                                
 Positional Uncertainty   : 0.1 to 0.5 n.miles                                  
 Depth Datum              : Chart reference                                     
                                                                                
 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  : 732/973/152                                         
                                                                                
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 Additional information stored with the data:                                   
                                                                                
    Station LCB1, La Chapelle Bank, Celtic Sea.                                 
    Clock lost 8 seconds over 35 days, 6.5 hours; the cycle interval  and  time 
    values  have  been  corrected. An interpolation program was used to produce 
    hourly values, on the hour, of the pressure record.                         
                                                                                
    Instrument characteristics and calibration factors                          
           OSTG Mk II, logger 02, sensor HP 3/2                                 
           Original sampling interval          15 minutes                       
           Integration period                        900s                       
           Temperature coefficient            2.87Hz/degC                       
           Pressure sensitivity at 11.24degC   0.128Hz/cm                       
           To convert pressure to elevation the following                       
           values should be used:                                               
                                                                                
           Density (from CTD casts)          1027.0 kg/m3                       
           Gravitational acceleration constant  9.809m/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    
  27762; Off-Shore Tide Gauge Mark II                                           
                                                                                
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