QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                                                                
              Station  : Christmas-A               Latitude:  01 59.1N          
              Country  : Republic of Kiribati     Longitude: 157 28.6W          
              JASL #   : 011A                 Time Meridian: LINT (GMT + 14 hr) 
              GLOSS #  : 146      TOGA #: P062       NODC #: 70151701           
              Contributor  : Scripps Institute of Oceanography                  
                             University of California at San Diego              
                             La Jolla, California                               
              Originator   : unconfirmed                                        
              Original Data: unconfirmed                                        
              Instrmnt Type: unconfirmed                                        
              Digitzd Intvl: unconfirmed                                        
              Present Data : Hourly, daily, and monthly values obtained by:     
                    Hourly : unconfirmed                                        
                    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 Dec 1955 - 01 Apr 1972                          
              Gaps > 1 mon : 03 Jul - 15 Aug 1956;16 Oct - 26 Nov 1959;         
                             01 Jan 1964 - 01 Jul 1965                          
              Time Refernce: GMT (hours 00-23)   Space-filler Flag   :-9999     
              Units        : millimeters         Missing Data Flag   : 9999     
              Existing     : No                  Operational         : No       
              Sat. Trans.  : No                  Distribution        : 1955-1972
              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     
                             changes in the reference level and agree with      
                             Kanton.  This series is distinguished from         
                             Christmas-B because the data have not been linked  
                             to a common datum.                                 

                             The local time zone is the same as Honolulu
                             plus one day.
                                                                                
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1955   8 none                 none              none              
              1956  88 185-228              none              none              
              1957 100 none                 none              none              
              1958 100 none                 none              none              
              1959  89 289-330              none              none              
              1960 100 none                 none              none              
              1961 100 none                 none              none              
              1962 100 none                 none              none              
              1963 100 none                 none              none              
              1964   0 1-366                none              none              
              1965  50 1-182                none              none              
              1966 100 none                 none              none              
              1967 100 none                 none              none              
              1968 100 none                 none              none              
              1969 100 none                 none              none              
              1970 100 none                 none              none              
              1971 100 none                 none              none              
              1972  25 none                 none              none