INFORMATION FOR BODC SERIES REF. NO.    33761                  
                         Sea Floor Pressure Gauge Inventory Number :   6948     
 Start Time : 06 Sep 1973 2052 GMT                  Latitude  :  52deg 28.0min N
 End Time   : 19 Oct 1973 1622 GMT                  Longitude : 002deg 13.0min E
 Nominal Cycle Interval   :  900.0 secs         Sensor Depth    :     39.00m    
                                                Sea Floor Depth :     39.00m    
 Positional Uncertainty   : 0.1 to 0.5 n.miles                                  
 Depth Datum              : Instantaneous                                       
 Project                  : JONSDAP 1973                                        
 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  : 736/973/249                                         
 Additional information stored with the data:                                   
    Station WI, Southern North Sea                                              
    Clock lost 2 seconds over 60 days, 15.5 hours; the cycle interval and  time 
    values have been corrected.                                                 
    Instrument characteristics and calibration factors                          
           OSTG Mk II, logger 03, sensor VIB  1/2                               
           Original sampling interval          15 minutes                       
           Integration period                        900s                       
           Temperature coefficient             5.1cm/degC                       
           Pressure sensitivity at 14.7degC   0.0389Hz/cm                       
           To convert pressure to elevation the following                       
           values should be used:                                               
           Density (from CTD casts)         1024.967kg/m3                       
           Gravitational acceleration constant  9.813m/s2                       
    The following gap occurs in the data record due  to  a  logger  malfunction 
    which caused the tape drive to stop and restart:                            
           1623h 14 Sept 1973 - 0923h 27 Sept 1973                              
 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        :   26423