=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991 Lyokki 060/221 RLR(1936) is 8.5m below BM =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993 Lyokki 060/221 RLR(1936) is 8.5m below BM =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 24-Sep-2002 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)'. 1858 - 1913 VALUES BASED ON 1 READING PER DAY NO BM INFORMATION BUT DATA SEEMS HOMOGENEOUS