QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                                                                
              Station  : Tarawa-B,Bairiki          Latitude:  01 19.9N          
              Country  : Republic of Kiribati     Longitude: 173 00.8E          
              JASL #   : 002B                 Time Meridian: 180E (GMT + 12 hr) 
              GLOSS #  : 113      TOGA #: P044       NODC #: 10171301           
              Contributor  : UH Sea Level Center                              
                             1000 Pope Rd. MSB 317                              
                             Honolulu, Hawaii 96822                             
              Originator   : Dept. of Oceanography                              
                             University of Hawaii                               
                             1000 Pope Rd. MSB 317                              
                             Honolulu, Hawaii 96822                             
              Original Data: digital                                            
              Instrmnt Type: 1. (primary,1983-present) Leupold and Stevens      
                                Analog-to-Digital Recorder (ADR);               
                             2. (backup,1983-present) Handar Encoder (ENC)      
                             3. (backup,1983-present) University of Hawaii      
                                Pressure Transducer (PRS)                       
              Digitzd Intvl: 15 (ADR); 10 (ENC); 3,5,10, or 15 (PRS) minutes    
              Present Data : Hourly, daily, and monthly values obtained by:     
                    Hourly : (pre-1987) Nine-point triangular filter centered   
                             on the hour with respective periods of the 95, 50, 
                             and 5% amplitude point of the filter response at   
                             623.6, 177.0, and 103.7 minutes;(1987+) three-point
                             Hanning filter centered on the hour                
                    Daily  : 119-point convolution filter (Bloomfield, 1976)    
                             centered on noon applied to the hourly data        
                             with respective periods of the 95, 50, and 5%      
                             amplitude points at 124.0, 60.2, and 40.2 hours    
                    Monthly: Simple average of all daily values; calculated if  
                             7 or fewer days are missing                        
              Span of data : 17 May 1983 - 10 May 1988                          
              Gaps > 1 mon : 19 Mar - 22 Apr 1988                               
              Time Refernce: GMT (hours 00-23)   Space-filler Flag   :-9999     
              Units        : millimeters         Missing Data Flag   : 9999     
              Existing     : No                  Operational         : No       
              Sat. Trans.  : No                  Distribution        : 1983-1988
              Refernce Levl: Heights are referred to the station tide staff 
                             zero, which is linked to land-based benchmarks. 
                             This reference zero is unique to this station and
                             is not an official datum (chart, national, etc.) 
                             and is not relative to local tidal parameters, 
                             such as mean lower low water.  See the Originators
                             for benchmark descriptions, maps, and the geodetic
                             levelling history.
              Comment      : Noisy residuals during spring tides of 1986-1988   
                             are due to silting in the stilling well around     
                             the time of lowest low water levels.  The          
                             daily and monthly means reveal no apparent changes 
                             in the reference level.  Station discontinued      
                             in May 1988.                                       
                                                                                
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1983  63 none                 none            none                
              1984 100 none                 none            none                
              1985  99 306-307              none            none                
              1986 100 none                 none            39-40,55,68-70,84-  
                                                            86,99,113-115,158,  
                                                            257-258             
              1987 100 none                 none            29,57-60,87-89,220- 
                                                            223,236-238,248-253,
                                                            278-279             
              1988  26 79-113               none            18-21,46-51,63-67,  
                                                            75-79