INFORMATION FOR BODC SERIES REF. NO.    33804                  
                         Sea Floor Pressure Gauge Inventory Number :   6950     
 Start Time : 06 Sep 1975 1237 GMT                  Latitude  :  50deg 49.2min N
 End Time   : 01 Oct 1975 0852 GMT                  Longitude : 010deg 55.0min W
 Nominal Cycle Interval   :  900.0 secs         Sensor Depth    :    172.00m    
                                                Sea Floor Depth :    172.00m    
 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  : 754/975/249                                         
 Additional information stored with the data:                                   
    Station C6, South west continental shelf.                                   
    Clock gained 5 seconds over 45 days, 22.25 hours; the  cycle  interval  and 
    time values have been corrected.                                            
    Instrument characteristics and calibration factors                          
           OSTG Mk II, logger 02, sensor DIG 5/1                                
           Original sampling interval          15 minutes                       
           Integration period                        900s                       
           Temperature coefficient           0.377Hz/degC                       
           Pressure sensitivity at 12.0degC    0.159Hz/mb                       
           To convert pressure to elevation the following                       
           values should be used:                                               
           Density                         1026.7219kg/m3                       
           No CTD casts were taken, density computed from                       
           mean surface temperatures and ICES salinity.                         
           Gravitational acceleration constant  9.811m/s2                       
 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