INFORMATION FOR BODC SERIES REF. NO.    33890                  
                         Sea Floor Pressure Gauge Inventory Number :   6957     
 Start Time : 21 Mar 1977 0952 GMT                  Latitude  :  54deg 38.9min N
 End Time   : 24 Apr 1977 0852 GMT                  Longitude : 003deg 54.6min W
 Nominal Cycle Interval   :  900.0 secs         Sensor Depth    :     32.00m    
                                                Sea Floor Depth :     32.00m    
 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  : 774/977/080                                         
 Additional information stored with the data:                                   
    Station 35, Irish Sea.                                                      
    Clock gained 14 seconds over 57 days, 18 hours; the cycle interval and time 
    values have been corrected.                                                 
    Instrument characteristics and calibration factors                          
           OSTG Mk II, logger 02, sensor DS 6/1                                 
           Original sampling interval          15 minutes                       
           Integration period                        900s                       
           Temperature coefficient             0.0mb/degC                       
           Pressure sensitivity at 8degC      0.1644Hz/mb                       
           To convert pressure to elevation the following                       
           values should be used:                                               
           Density (from CTD casts)         1025.893kg/m3                       
           Gravitational acceleration constant  9.815m/s2                       
    Sensor DS 6/1 is a Digiquartz sensor housed in an  Aanderaa  current  meter 
 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