=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Heimsjo             040/151 RLR(1967) is 9.9m below BM E24N1
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 29-Jul-1993
Anomalously low value for June 1958 - checked correct as received from authority.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 30-Mar-1995
Tide gauge network modernised, new equipment installed in 1990
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 28-Jan-2009
Following the input of revised data values station made Metric awaiting datum information.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 06-Apr-2009
2007/8 mean sea level values entered as METRIC only
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 06-Apr-2009
The Norwegian Mapping Authority have revised their datasets TGBM for Heimsjo is now E24 N1 throughout the dataset this is 4.934m above TGZ. Because of this and the advent of the new
database it was decided to re-calculate RLR. RLR year is now 2008 the recalculated to RLR factor is 5.066m. RLR (2008) is 10.0m below TGBM E24 N1
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 05-Sep-2012
For information on sea level change along the Norwegian coast see paper
"Contributions to sea level variability along the Norwegian coast for 1960-2010"
by K Richter J.E.O. Nilsen and H. Drange.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 16-Jul-2013
Previously data for 1958 was flagged 'suspect' see comment above. However, with an extended dataset the data would appear correct. The flags have been removed.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 25-Jan-2018
Monthly mean data values for November 1932 has been revised, August 1934 and October 1944 have been removed and November 1990 has been revised using data supplied by the Norwegian Mapping Authority.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 15-Aug-2018
Monthly mean values for November and December 2017 have been replaced due to technical problems at the tide gauge. Revised data was obtained from the Norwegian Mapping Authority website.