QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                       updated: 16 Jul 2015
              Station  : Johor Baharu              Latitude:  01 27.7N          
              Country  : Malaysia                 Longitude: 103 47.5E          
              JASL #   : 321A                 Time Meridian: 120E (GMT + 8 hr)  
              GLOSS #  : none Originator #: JBH      NODC #: 10101301           
              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 : 18 Dec 1983 - 28 Dec 2013
              Gaps > 1 mon : 30 Jun 1989 - 02 Aug 1989;12 May 2002 - 19 Jun 2002
                             07 Dec 2004 - 10 Jan 2005;13 Oct 2009 - 17 Nov 2009
                             12 Aug 2012 - 19 Sep 2012
                             22 Apr 2010 - 24 Jun 2010
              Time Refernce: GMT (hours 00-23)   Space-filler Flag   :-9999     
              Units        : millimeters         Missing Data Flag   : 9999     
              Existing     : Yes                 Operational         : Yes      
              Sat. Trans.  : No                  Distribution        : 1983-2013
              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 are very noisy which is        
                             probably due to shallow water tides that are not   
                             resolved by the harmonic analysis.  The daily and  
                             monthly means of J. Baharu agree with Kuantan.     
                             No reference level shifts are apparent.            
                                                                                
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1983   4 none                 none            see comment above   
              1984  89 50-68,232-254        none            "       "     "     
              1985  80 100-108,114-133,     none            "       "     "     
                       277-319                                                  
              1986  96 292-299,305-309      none            "       "     "     
              1987 100 none                 none            "       "     "     
              1988 100 none                 none            "       "     "     
              1989  91 181-214              none            "       "     "     
              1990 100 none                 none            "       "     "     
              1991 100 none                 none            "       "     "     
              1992 100 none                 none            "       "     "     
              1993  94 73-96                none            "       "     "     
              1994  84 95-120,216-236,      (11)094-(04)095 "       "     "
                       243-256
              1995  91 103-110,236-263      none            "       "     "
              1996 100 none                 none            "       "     "
              1997 100 none                 none            "       "     "
              1998 100 none                 none            "       "     "
              1999 100 none                 none            "       "     "
              2000 100 none                 none            "       "     "
              2001  96 235-251              none            "       "     "
              2002  90 132-170              none            "       "     "
              2003 100 none                 none            "       "     "
              2004  93 342-366              none            "       "     "
              2005  97 1-10                 none            "       "     "
              2006  99 362-365              none            "       "     "
              2007  94 1-23                 none            "       "     "
              2008 100 none                 none            "       "     "
              2009  83 118-145,286-321      none            "       "     "
              2010  83 112-175              none            "       "     "
              2011 100 none                 none            "       "     "
              2012  90 225-263              none            "       "     "
              2013  93 5-14,334-351         none            "       "     "