=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Goteborg-Torshamnen 050/032 RLR(1977) is 11.2m below BM Goteborg-Torshamnen
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993
Goteborg-Torshamnen 050/032 RLR(1977) is 11.2m below BM Goteborg-Torshamnen
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 19-Oct-1994
data for 1987-90 revised in October 1994
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 19-May-2010
Data for 1937-2008 given to 220cm below Swedish Height System 1900 (RH00)
Data for 2009 onward given to local datum 1014.0cm below RH00
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 09-Jun-2010
Beacause of the change in reference datum the RLR value is now -2970mm.