Mantyluoto 060/101 RLR(1964) is 9.7m below BM52307
Documentation added 2002-09-24
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)'. 1910-1924 Values based on 1 reading per day. Prior to 1970 gauge at 61 36 N, 21 29 E 1925-1970 Values based on 6 readuings a day
Documentation added 2012-01-03
Prior to the gauge being moved the Primary benchmark 1925-1969 was 52307 4.407m above gauge datum. When the gauge was moved benchmark 1970-1988 was N7101 4.774m relative to the datum. This is no longer used and was replaced by 89110 3.970m relative to gauge datum in 1989.
Documentation added 2017-01-31
Following the 2016 levelling exercise some adjustments have been made to the benchmark reference heights - at Mantyluoto this was +2mm for BM 89110. 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.
Documentation added 2017-12-20
Data values for November and December 2014 have been revised by the Finnish Meteorological Institute.
Finnish Meteorological Institute Marine Research, Waves and Sea Level Erik Palenin aukio 1 P.O. Box 503 FI - 00101 Helsinki