=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991 Lumut 550/005 RLR(1986) is 10.5m below BM No A0401 =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993 Lumut 550/005 RLR(1986) is 10.5m below BM No A0401 =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 17-Sep-2012 Publication Tidal Observation Records 2010 confirms Primary benchmark remains A0401 5.685m above TGZ.