=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 25-Apr-2000
St. Mary's          170/163 RLR(1997) is 11.3m below TGBM bolt
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 02-Jan-2001
Recent work on vertical land movements in the UK can be found from
the University of Nottingham web site:
http://ukcogr.iessg.nottingham.ac.uk/~eosi/
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 13-Dec-2012
Possibly due to rounding the annual mean for the RLR year 1997 is 3.174m in the
database.As a result the RLR factor has changed from 3.876m to 3.875m and the 
height of MSL to RLR has changed from 7.05m to 7.049m.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 02-Jun-2015
There were problems with pressure loss throughout the year with readings >60mm low in places. TGI were at site 27.09.14 to carry out general maintenance and survey the site for a new tide gauge once harbour works have been completed.