1969-79(OCT) Data from readings of tide pole
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Katakolon           290/017 RLR(1977) is 9.6m below BM R11
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993
Katakolon           290/017 RLR(1977) is 9.6m below BM R11
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Mar-1997
The contributing authority advises that anomalous values
are the result of met. influences
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 07-Aug-2013
With the receipt of datum diagrams from the Hellenic Navy the RLR diagram has been re-drawn. As a consequence the RLR factors have changed.