QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                                                                
              Station  : Honolulu,Pier 45, Hawaii  Latitude:  21 19.1N          
              Country  : USA                      Longitude: 157 53.1W          
              JASL #   : 027A                 Time Meridian: 150W (GMT - 10 hr) 
              GLOSS #  : none     TOGA #: none       NODC #: 72151703           
              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: Leupold and Stevens Analog-to-Digital Recorder     
              Digitzd Intvl: 15 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 : 26 Oct 1985 - 31 Dec 1990                          
              Gaps > 1 mon : none                                               
              Time Refernce: GMT (hours 00-23)   Space-filler Flag   :-9999     
              Units        : millimeters         Missing Data Flag   : 9999     
              Existing     : Yes                 Operational         : Yes      
              Sat. Trans.  : Yes                 Distribution        : 1985-1988
              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      : The daily and monthly means reveal small changes   
                             in the reference level on 25 Apr 1989 (+2.5 cm),   
                             1 Mar 1990 (-1 cm) and 1 Oct 1990 (+1 cm).  This   
                             station is a test site and the data are of         
                             lower quality than the Honolulu (NOAA) station.    
                                                                                
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1985  18 none                 none            none                
              1986 100 none                 none            none                
              1987 100 none                 none            none                
              1988 100 none                 none            none                
              1989 100 none                 none            none                
              1990 100 none                 none            none