QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                       updated: 25 Aug 2000
              Station  : Port Allen                Latitude:  21 54.0N
              Country  : USA                      Longitude: 159 36.0W
              JASL #   : 553A                 Time Meridian: 150W (GMT - 10 hr)
              GLOSS #  : none Originator #:1611347   NODC #: 72151902
              Contributor  : National Ocean Service (NOS)                       
                             National Ocean. and Atmos. Administration (NOAA)   
                             N/OES22
                             SSMC4, STATION 7109
                             1305 East West Highway
                             Silver Spring, MD. 20910-3233
              Originator   : same                                               
              Original Data: digital 
              Instrmnt Type: Aquatrak acoustic gauge, NOAA Next Generation 
                             Water Level Measuring System (NGWLMS) 
              Digitzd Intvl: six-minute (each sampling is a 3-minute average)
              Present Data : Hourly, daily, and monthly values obtained by:     
                    Hourly : The original digitizing interval was hourly        
                             (standard); spot sampling on the hour (adr/NGWLMS)
                    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 : 28 Feb 1989 - 29 Jan 1997
              Gaps > 1 mon : 01 Aug 1996 - 30 Sep 1996
              Time Refernce: GMT (hours 00-23)   Space-filler Flag   :-9999     
              Units        : millimeters         Missing Data Flag   : 9999     
              Existing     : Yes                 Operational         : Yes      
              Sat. Trans.  : Yes                 Distribution        : 1989-1997
              Refernce Levl: All heights have been referred to the station tide 
                             staff zero which is linked to fixed bench marks    
              Comment      : The daily and monthly means reveal no apparent     
                             reference level changes or trends and agree with   
                             the nearest stations.  
                                                                                
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1989  84 none                 none            none
              1990 100 none                 none            none
              1991  99 48-52                none            none
              1992 100 none                 none            none
              1993 100 none                 none            none
              1994 100 none                 none            none
              1995  99 19-23                (03)014-(11)014 none
                                            (19)015-(06)017
                                            (13)017-(06)018
                                            (15)018-(23)018
              1996  83 214-274              none            none
              1997   8 none                 none            none