INFORMATION FOR BODC SERIES REF. NO.    33908                  
                         Sea Floor Pressure Gauge Inventory Number :   6958     
 Start Time : 22 Mar 1977 1507 GMT                  Latitude  :  52deg 04.1min N
 End Time   : 27 Apr 1977 1222 GMT                  Longitude : 005deg 47.0min W
 Nominal Cycle Interval   :  900.0 secs         Sensor Depth    :     95.00m    
                                                Sea Floor Depth :     95.00m    
 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  : 775/977/081                                         
 Additional information stored with the data:                                   
    Station 33, Irish Sea.                                                      
    Clock lost 9 seconds over 57 days, 22.25 hours; the cycle interval and time 
    values have been corrected.                                                 
    Instrument characteristics and calibration factors                          
           OSTG Mk II, logger 05, sensor VIB 1/6                                
           Original sampling interval          15 minutes                       
           Integration period                        900s                       
           Temperature coefficient          -10.86mb/degC                       
           Pressure sensitivity at 8.44degC  0.03734Hz/mb                       
           To convert pressure to elevation the following                       
           values should be used:                                               
           Density (from CTD casts)         1026.896kg/m3                       
           Gravitational acceleration constant  9.813m/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