Please note: In many cases, the station position in our database is accurate
to only one minute. Thus, the tide gauge may not appear to be on the coast.
Khalkis South 290/033 RLR(1978) is 9.3m below BM R60
Documentation added 1997-03-11
The contributing authority advises that anomalous values are the result of met. influences
Documentation added 1997-03-11
values for December 1987 and December 1990 affected by missing data
Documentation added 2006-11-28
Whole dataset flagged due to unresolved datum query.
Documentation added 2011-07-13
Following further information from the Hellenic Navy Hydrographic Service the data for Khalkis South were adjusted. Plotted data now appears correct. Therefore the station flag has been removed and the station reverted to RLR status. The RLR diagram has been redrawn to include the adjustments.
Documentation added 2013-08-12
following receipt of datum diagrams from the Hellenic Navy the RLR diagram has been re-drawn. In consequence the RLR factors have changed.
Data Authority
Hellenic Navy Hydrographic Service Geographic Policy and International Relations Office TGN 1040 Athens