QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                       updated: 21 Feb 2002
              Station  : Point Fortin              Latitude:  10 06.0N          
              Country  : Trinidad and Tobago      Longitude: 061 25.0W          
              JASL #   : 728A                 Time Meridian: 060W (GMT - 4 hr)  
              GLOSS #  : none     TOGA #: none       NODC #: 71060102           
              Contributor  : Institute of Marine Affairs
                             P.O. Box 3160
                             Carenage Post Office
                             Trinidad and Tobago
                                and digitization by
                             University of Hawaii Sea Level Center
                             1000 Pope Rd., MSB 316
                             Honolulu, HI 96822 USA
              Originator   : Trinadad/Tobago Hydrographic Unit
                             P.O. Box 1104
                             Port-of-Spain
                             Trinidad and Tobago
              Original Data: analog
              Instrmnt Type: standard float and well
              Digitzd Intvl: hourly
              Present Data : Hourly, daily, and monthly values obtained by:     
                    Hourly : spot
                    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 : 01 Jan 1987 - 31 Dec 1996
              Gaps > 1 mon : 01 Apr 1988 - 01 Nov 1988;01 Oct 1990 - 01 Nov 1990
                             01 Dec 1991 - 01 Jan 1992;01 Jan 1993 - 01 Jan 1996
              Time Refernce: GMT (hours 00-23)   Space-filler Flag   :-9999     
              Units        : millimeters         Missing Data Flag   : 9999     
              Existing     : Yes                 Operational         : Yes      
              Sat. Trans.  : No                  Distribution        : 1987-1996
              Refernce Levl: The sea level heights are referred to the zero     
                             point assigned to the tide staff. Bench mark       
                             information is available upon request from the 
                             originators.
              Comment      : The daily and monthly means do not reveal any      
                             obvious reference level shifts.  The timing
                             appears to drift occasionally in the hourly data.
                                                                          
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1987  99 1                    (15)102-(23)102 29,32-33,73-74,78-
                                            (14)190-(03)191 79,104-109,134-138,
                                                            226,251,309,359
              1988  38 19-25,92-306,315-322 none            47-49
              1989  99 269-271,335-338      (04)305-(03)306 39-41,123-125,315-
                                                            316
              1990  87 18-22,176-190,274-   none            68-70,87-89,98,221-
                       305                                  222,231-235,249-251,
                                                            258-265
              1991  88 133-141,261-266,     (04)230-(03)231 250-254,269-271,297,
                       335-365                              312-313
              1992  99 1                    (18)191-(01)192 213
                                            (16)295-(04)296
              1993   0 1-365                none            none
              1994   0 1-365                none            none
              1995   0 1-365                none            none
              1996  98 1,79-85,316-320      (03)254-(18)254 18-19,22-24,95,185-
                                                            186,213-215,269-271