QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                       updated: 20 Dec 2002
              Station  : Santana-A                 Latitude:  00 03.4S
              Country  : Brazil                   Longitude: 051 10.8W
              JASL #   : 716A                 Time Meridian: 045W (GMT - 3 hr)
              GLOSS #  : none Originator #:10620     NODC #: 50050101
              Contributor  : Directoria de Hidrografia e Navegacao              
                             Banco Nacional de Dados Oceangraficos
                             Rua Barao de Jaceguai, S/N 24040                   
                             Ponta de Armacao                                   
                             RJ, Niteroi                                        
                             BRAZIL                                             
              Originator   : Directoria de Hidrografia e Navegacao
                             Centro de Hidrografia de la Marinha
              Original Data: analog
              Instrmnt Type: float and stilling well                            
              Digitzd Intvl: spot hourly
              Present Data : Hourly, daily, and monthly values obtained by:     
                    Hourly : spot hourly                                        
                    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 : 05 May 1970 - 01 Jul 1972
              Gaps > 1 mon : none
              Time Refernce: GMT (hours 00-23)   Space-filler Flag   :-9999     
              Units        : millimeters         Missing Data Flag   : 9999     
              Existing     : No                  Operational         : No
              Sat. Trans.  : No                  Distribution        : 1970-1972
              Refernce Levl: The data have been linked to tide staff zero by
                             the originators.  However, time segments of data
                             for 1975-76, 1984-85, 1996-97, 2006 each appear to
                             have independent datums; thus, the series are
                             broken into unique pieces.
              Comment      : The site is located near a wide, strong river.
                             The site is referred to as "Porto de Santana" by 
                             the originators.  The complex tides were not 
                             resolved well by the tidal analysis thus
                             it is difficult to distinguish timing errors 
                             in the residuals.  
                                                                 
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1970  66 none                 none            see comment above
              1971 100 none                 none            see comment above
              1972  50 none                 none            see comment above