INFORMATION FOR BODC SERIES REF. NO.    33970                  
                         Sea Floor Pressure Gauge Inventory Number :   6976     
 Start Time : 28 Mar 1978 0637 GMT                  Latitude  :  50deg 35.0min N
 End Time   : 21 Jul 1978 0237 GMT                  Longitude : 006deg 10.0min W
 Nominal Cycle Interval   :  900.0 secs         Sensor Depth    :     91.30m    
                                                Sea Floor Depth :     91.30m    
 Positional Uncertainty   : 0.1 to 0.5 n.miles                                  
 Depth Datum              : Instantaneous                                       
 Project                  : IOS Celtic Sea Experiment 1978                      
 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  : 784/978/087                                         
 Additional information stored with the data:                                   
    Station D, Celtic Sea.                                                      
    No timing scans on recovery. On previous deployments of this tide gauge  in 
    1976  and  1977  suggested a clock gain of 0.01 seconds per hour. This gain 
    has been assumed for this deployment also.                                  
    Instrument characteristics and calibration factors                          
           OSTG Mk II, logger 02, sensor DIG DS 6/2                             
           Original sampling interval          15 minutes                       
           Integration period                        900s                       
           Temperature coefficient             0.0mb/degC                       
           Pressure sensitivity at 8.89degC   0.1545Hz/mb                       
           To convert pressure to elevation the following                       
           values should be used:                                               
           Density (from CTD casts)           1027.0kg/m3                       
           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                                           
 Project Document        :   27220