A description of the sea level network in Finland can be found in 'Operational Oceanography: Implementation at the European and Regional scales. 2002 (pp.129-137)'. 1879-1903 VALUES BASED ON 1 READING PER DAY 1904-1970 VALUES BASED ON 6 READINGS PER DAY
Documentation added 2012-01-03
Levelling information recently supplied by the Finnish Meteorological Institute confirms Primary benchmark remains 7HB 4.48m above gauge datum of 1904 onwards. Previous datum for 1879-1903 was 1.967m above the present datum.
Documentation added 2017-01-31
Following the 2016 levelling exercise some adjustments have been made to the benchmark reference heights - at Helsinki this was +1mm for BM 7HB. The adjustments are a result of more accurate measuring and calculations using the N2000 height system. The RLR diagram has been re-drawn because of this.
Finnish Meteorological Institute Marine Research, Waves and Sea Level Erik Palenin aukio 1 P.O. Box 503 FI - 00101 Helsinki