INFORMATION FOR BODC SERIES REF. NO.    33816                  
                         Sea Floor Pressure Gauge Inventory Number :   6951     
 Start Time : 09 Mar 1976 0737 GMT                  Latitude  :  58deg 37.0min N
 End Time   : 15 Apr 1976 0451 GMT                  Longitude : 002deg 26.3min W
 Nominal Cycle Interval   :  900.0 secs         Sensor Depth    :     63.00m    
                                                Sea Floor Depth :     63.00m    
 Positional Uncertainty   : 0.1 to 0.5 n.miles                                  
 Depth Datum              : Chart reference                                     
 Project                  : JONSDAP 1976                                        
 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  : 761/976/069                                         
 Additional information stored with the data:                                   
    Station 53, Northern North Sea                                              
    Clock gained 69 seconds over 58 days, 2.75 hours; the  cycle  interval  and 
    time values have been corrected.                                            
    Instrument characteristics and calibration factors                          
    Aanderaa Current meter/Pressure recorder, logger 1747, sensor DIG 5/2       
           Original sampling interval          15 minutes                       
           Integration period                        900s                       
           Temperature data record from current meter 1747                      
           Temperature coefficient           -0.61Hz/degC                       
           Pressure sensitivity at 4.0degC     6.547mb/Hz                       
           To convert pressure to elevation the following                       
           values should be used:                                               
           Density (from CTD casts)         1027.324kg/m3                       
           Gravitational acceleration constant  9.818m/s2                       
    A current meter was also deployed on this mooring.                          
 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                               
 Project Document        :   12764