QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                       updated: 07 May 1999
              Station  : Seward-A,AK               Latitude:  60 07.2N
              Country  : USA                      Longitude: 149 25.6W
              JASL #   : 560A                 Time Meridian: 150W (GMT - 10 hr)
              GLOSS #  : 150  Originator #:9455090   NODC #: 76140901
              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: analog (standard)
              Instrmnt Type: standard analag gauge (float/well)
              Digitzd Intvl: hourly (standard)
              Present Data : Hourly, daily, and monthly values obtained by:     
                    Hourly : The original digitizing interval was hourly        
                             (standard)
                    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 : 21 May 1925 - 31 Dec 1932
              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.  : No                  Distribution        : 1925-1932
              Refernce Levl: All heights have been referred to the station tide 
                             staff zero which is linked to fixed bench marks.
                             While standard mechanical or ADR instrument was the
                             primary gauge, leveling calibration factors were
                             applied monthly based on tide staff comparisons.
              Comment      : The hourly residuals show some periods with
                             poor timing as noted below.  This series is
                             separate from Seward-B, Seward-C, etc, because
                             it is not confirmed that the segments in time
                             are related to the same datum.  
                                                                                
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1925  61 329-332              (21)186-(09)187 141,188-195
                                            (10)192-(09)193
              1926  99 285-287              (13)024-(00)025 344
                                            (10)204-(09)205
                                            (10)260-(09)261
                                            (10)307-(09)308
              1927  97 2-4,263-265,359-365  (10)160-(09)161 211,311-318,326-329,
                                            (10)272-(09)273 335-343
                                            (10)300-(09)301
              1928  92 1-29,167-169         (15)175-(09)176 none
                                            (10)182-(23)182
              1929 100 none                 (10)196-(09)197 none
                                            (10)322-(09)323
              1930 100 none                 (12)214-(09)215 none
              1931 100 none                 (15)023-(09)024 none
                                            (10)031-(23)031
              1932 100 none                 (10)167-(09)168 none
                                            (16)283-(23)283
                                            (10)292-(09)293