INFORMATION FOR BODC SERIES REF. NO.    34082                  
                         Sea Floor Pressure Gauge Inventory Number :   6928     
 Start Time : 01 Apr 1980 1307 GMT                  Latitude  :  51deg 24.6min N
 End Time   : 29 Apr 1980 1237 GMT                  Longitude : 005deg 00.6min W
 Nominal Cycle Interval   :  900.0 secs         Sensor Depth    :     60.00m    
                                                Sea Floor Depth :     60.00m    
 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  : 801/980/092                                         
 Additional information stored with the data:                                   
    Station BC3, Bristol Channel.                                               
    Clock gained 18 seconds over 36 days, 0.25 hours; the  cycle  interval  and 
    time values have been corrected.                                            
    Instrument characteristics and calibration factors                          
           Teleost Pressure Recorder, sensor S/G, serial number 281             
           Original sampling interval          15 minutes                       
           Integration period                        900s                       
           No temperature correction made                                       
           Temperature coefficient          -0.495Hz/degC                       
           Pressure sensitivity at 9.867degC  0.0780Hz/mb                       
           To convert pressure to elevation the following                       
           values should be used:                                               
           Density                              1027kg/m3                       
           Gravitational acceleration constant  9.812m/s2                       
    On recovery mud was found on one side of the frame as if the rig  had  been 
    held  in  mud. Density calculated from measured temperatures and a regional 
    salinity of 35 parts per thousand.                                          
 The following additional documents apply to this series:                       
  27731; I.O.S. Calibration and Data Processing of Off-Shore Tide Gauge Data    
  27840; Teleost Pressure Recorder