QUALITY ASSESSMENT OF SEA LEVEL DATA                
                                           by the                               
                   UH SEA LEVEL CENTER/NATIONAL OCEANOGRAPHIC DATA CENTER     
                                 JOINT ARCHIVE FOR SEA LEVEL                    
                                       updated: 06 Oct 2015
              Station  : Honningsvag               Latitude:  70 59.0N
              Country  : Norway                   Longitude:  25 59.0E
              JASL #   : 801A                 Time Meridian: 015E (GMT + 1 hr) 
              GLOSS #  : none  Originator #:         NODC #: 17020501
              Contributor  : Norwegian Hydrographic Services (NHS)
                             Oceanographic Group
                             PO Box 60
                             N-4011 Stavanger
                             NORWAY
              Originator   : same
              Original Data: digital                                      
              Instrmnt Type: 05 06 1970: series began, instrument unconfirmed
                             01 07 1988: Scan-Matic gauge
                             14 06 2002: Sutron gauge
              Digitzd Intvl: 10 minute
              Present Data : Hourly, daily, and monthly values obtained by:     
                    Hourly : Hanning 3-pt filter centered on the hour
                    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 Jun 1988 - 31 Dec 2014
              Gaps > 1 mon : 01 Jul 1988 - 31 Dec 1988;24 Jul 1989 - 31 Dec 1989
                             31 May 1991 - 16 Jul 1991;16 Nov 1991 - 31 Dec 1991
              Time Refernce: GMT (hours 00-23)   Space-filler Flag   :-9999     
              Units        : millimeters         Missing Data Flag   : 9999     
              Existing     : Yes                 Operational         : Yes      
              Sat. Trans.  : unconfirmed         Distribution        : 1988-2014
              Refernce Levl: Data relative to Chart Datum.
                             TGZM: W2 N1
                             Auxiliary BM : W2 N2  3.537m above TGBM
                             Auxiliary BM : W2 N3 13.880m above TGBM
                             Normalnull 1954: not transferring to Honningsvag
              Comment      : Missing data 2004-2010 as downloaded from 
                             from NHS were acquired from the University of
                             Hawaii Fast Delivery set.  Overlap led to a
                             +90mm added to UH set to link to chart datum.
                             The timing 2004-2010 appears off on order of
                             minutes. The daily means agree well with AVISO
                             altimeter 1992-2014.

                             The tide gauge is located on "Belgebryterkaia"
                             in downtown Honningsvag.
                                                                                
                    CI MISSING              REPLACED GAPS     QUESTIONABLE      
              YEAR (%) DATA                 OR BAD DATA       FLUCTUATIONS      
              ---- --- -------------------- --------------- --------------------
              1988   9 184-366              none            none
              1989  50 12-16,19-20,23-24,   none            none
                       30-32,132-133,146-
                       147,151-152,159-165,
                       202-203,205-365
              1990 100 none                 (09)365-(23)365 none
              1991  75 151-197,320-365      none            none
              1992  99 25-26,265-266,364-   none            none
                       366
              1993  97 69-70,175-179,360-   none            none
                       365
              1994  89 48-50,237-255,345-   none            none
                       365
              1995 100 none                 none            none
              1996 100 none                 (13)366-(23)366 none
              1997 100 none                 none            none
              1998 100 none                 (10)256-(20)256 none
                                            (08)365-(23)365
              1999 100 none                 none            none
              2000 100 none                 none            none
              2001 100 none                 none            none
              2002 100 none                 (07)163-(14)163 none
                                            (09)365-(23)365
              2003 100 none                 none            none
              2004  97 135-140,362-365      none            none
              2005 100 none                 (22)121-(21)122 none
              2006 100 none                 none            none
              2007 100 none                 (12)058-(09)059 none
              2008  99 216-221              none            none
              2009 100 none                 none            none
              2010 100 none                 none            none
              2011 100 none                 none            none
              2012 100 none                 (13)219-(07)220 none
                                            (04)366-(23)366
              2013 100 none                 (16)365-(23)365 none
              2014  99 365                  none            none