=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 31-Aug-2010
Supplying authority have confirmed datum of observations is local tide staff zero. Benchmark FBM 4 is 4.3102 above tide staff zero RLR (2009) has been defined as 10.6 m below FBM 4
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 23-Jan-2019
Data values have been revised throughout the data series. Because of this the complete dataset has been re-loaded.

