QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                       updated: 23 May 2017
              Station  : Keling                    Latitude:  02 12.9N          
              Country  : Malaysia                 Longitude: 102 09.2E          
              JASL #   : 141A                 Time Meridian: 120E (GMT + 8 hr)  
              GLOSS #  : none Originator #: TGK      NODC #: 10102201         
              Contributor  : Dept. of Survey and Mapping                        
                             Jalan Gurney                                       
                             50578 Kuala Lumpur, Malaysia                       
              Originator   : same                                               
              Original Data: digital; samples taken every 10 sec; 50 sec average
              Instrmnt Type: Magnetic Tape Type Tide Gauge, Model LLT-          
                             3AD (Kyowa Shoko Co. LTD, Japan)                   
              Digitzd Intvl: one hour                                           
              Present Data : Hourly, daily, and monthly values obtained by:     
                    Hourly : Five-point least squares approximation (more       
                             information available from the address above)      
                    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 : 05 Nov 1984 - 31 Dec 2015
              Gaps > 1 mon : 20 Apr 2007 - 22 May 2007;29 Apr 2015 - 29 May 2015
              Time Refernce: GMT (hours 00-23)   Space-filler Flag   :-9999     
              Units        : millimeters         Missing Data Flag   : 9999     
              Existing     : Yes                 Operational         : Yes      
              Sat. Trans.  : No                  Distribution        : 1984-2015
              Refernce Levl: The sea level heights are referred to the zero     
                             point assigned to the tide gauge. Bench mark       
                             information is available upon request from the     
                             contributors.                                      
              Comment      : The residual series contain fluctionations with    
                             frequencies near the diurnal and semi-diurnal      
                             modes; these are probably due to shallow water     
                             tides that are not resolved by the harmonic        
                             analysis.  The daily and monthly means of Keling   
                             and neighboring stations, Keling and Lumut, agree  
                             very well and no obvious reference level shifts or 
                             trends are apparent.                               
                                                                                
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1984  13 none                 none            see comment above   
              1985 100 none                 none            "      "       "    
              1986 100 none                 none            "      "       "    
              1987 100 none                 none            "      "       "    
              1988 100 none                 none            "      "       "    
              1989  97 289-300              none            "      "       "    
              1990 100 none                 none            "      "       "    
              1991  97 301-303,314-325      (05)297-(12)297 "      "       "    
                                            (15)304-(05)305                     
                                            (21)307-(05)308                     
                                            (23)309-(10)310                     
                                            (11)312-(03)313                     
              1992  97 50-61                none            "      "       "
              1993  99 75-77                none            "      "       "
              1994 100 none                 none            "      "       "
              1995 100 none                 none            "      "       "
              1996 100 none                 none            "      "       "
              1997  96 160-175              none            "      "       "
              1998  94 60-83                none            "      "       "
              1999 100 none                 none            "      "       "
              2000 100 none                 none            "      "       "
              2001 100 none                 none            "      "       "
              2002 100 none                 none            "      "       "
              2003 100 none                 none            "      "       "
              2004 100 none                 none            "      "       "
              2005 100 none                 none            "      "       "
              2006 100 none                 none            "      "       "
              2007  90 96-100,110-142       none            "      "       "
              2008 100 none                 none            "      "       "
              2009 100 none                 none            "      "       "
              2010 100 none                 none            "      "       "
              2011 100 none                 none            "      "       "
              2012 100 none                 none            "      "       "
              2013 100 none                 none            "      "       "
              2014 100 none                 none            "      "       "
              2015  92 119-149              none            "      "       "