QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                       updated: 25 Mar 2014
              Station  : Telchac, Yuk.             Latitude:  21 20.4N          
              Country  : Mexico                   Longitude: 089 18.5W          
              JASL #   : 862A                 Time Meridian: 090W (GMT - 6 hr)  
              GLOSS #  : none Originator #: 415      NODC #: 72081901           
              Contributor  : Servicio Mareografico Nacional                     
                             Instituto de Geofisica                             
                             Universidad Nacional Autonoma de Mexico            
                             04510 Mexico, D. F.                                
                             MEXICO
              Originator   : same                                               
              Original Data: digital 
              Instrmnt Type: float and well
              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 2011 - 30 Apr 2013
              Gaps > 1 mon : none
              Time Refernce: GMT (hours 00-23)   Space-filler Flag   :-9999     
              Units        : millimeters         Missing Data Flag   : 9999     
              Existing     : Yes                 Operational         : Yes      
              Sat. Trans.  : Yes                 Distribution        : 2011-2013
              Refernce Levl: The sea level heights are referred to the station
                             tide staff zero which is surveyed to fixed
                             bench marks on land.
              Comment      : The daily and monthly values do not reveal any     
                             obvious reference level shifts or trends. 
                                                                                
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              2011   6 348-350,354-360,     none            none 
                       362-365
              2012  98 1-5,30-33            (14)106-(00)107 none
              2013  26 24-29,31-53          none            none