QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                                                                
              Station  : Yap-A                     Latitude:  09 31.0N
              Country  : Fed. States Micronesia   Longitude: 138 08.0E
              JASL #   : 008A                 Time Meridian: 150E (GMT + 10 hr)
              GLOSS #  : 119      TOGA #: P017       NODC #: 10139801
              Contributor  : Scripps Institute of Oceanography (D.Luther)
                             University of California at San Diego              
                             La Jolla, California                               
              Originator   : Coastal Geodetic Survey
              Original Data: unconfirmed 
              Instrmnt Type: unconfirmed 
              Digitzd Intvl: unconfirmed 
              Present Data : Hourly, daily, and monthly values obtained by:     
                    Hourly : key-punched at hourly interval
                    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 : 28 Feb 1951 - 31 Dec 1952
              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        : 1951-1952
              Refernce Levl: All heights have been referred to the station tide 
                             staff zero which is linked to fixed bench marks.
              Comment      : The timing is less accurate than plus or 
                             minus 7.5 minutes.  The daily and monthly  
                             means reveal no apparent changes in the reference
                             level.

                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1951  84 none                 none            none
              1952 100 none                 none            25-27,63-65,328-329