=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 13-Jan-1998
National Tidal Facility SEAFRAME station
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 26-Aug-2010
Data supplier has confirmed that tide gauge zero for all data is LAT (93-94)Tide gauge benchmark MAR 3 is 2.659 m above LAT.RLR (2009) is defined as 8.6 m below MAR 3
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 23-Jan-2019
A number of data values prior to 2010 have been revised. Because of this the entire data series has been re-loaded.