QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                       updated: 04 Feb 2011
              Station  : Porto Grande,Cape Verde   Latitude:  16 52.0N          
              Country  : Portugal                 Longitude: 024 59.0W          
              JASL #   : 216A                 Time Meridian: 015W (GMT - 1 hr)
              GLOSS #  : none     TOGA #: A023       NODC #: 71026401           
              Contributor  : Instituto Hidrografico de Marinha                  
                             Rua das Trinas, 49                                 
                             P-1296                                             
                             Lisboa Codex                                       
                             PORTUGAL                                           
              Originator   : same                                               
              Original Data: analog                                             
              Instrmnt Type: A.OTT R20T, float and stilling well                
              Digitzd Intvl: one hour                                           
              Present Data : Hourly, daily, and monthly values obtained by:     
                    Hourly : direct digitization, no filter                     
                    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 : 10 Jul 1990 - 31 Dec 1993                          
              Gaps > 1 mon : 13 Nov 1990 - 31 Dec 1992
              Time Refernce: GMT (00-23 hours)   Space-filler Flag   :-9999     
              Units        : millimeters         Missing Data Flag   : 9999     
              Existing     : No                  Operational         : No       
              Sat. Trans.  : No                  Distribution        : 1990-1993
              Refernce Levl: The data have been linked to tide staff zero       
                             and fixed bench marks by the originators.          
              Comment      : No obvious problems were noted in the hourly       
                             or daily data.  
                                                                                
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1990  34 317-365              none            none               
              1991   0 1-365                none            none
              1992   0 1-366                none            none
              1993 100 none                 none            none