=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991 Alert 970/162 RLR(1968) is 9.6m below BM-3-1960 =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 28-Jan-2009 Treat data 1965-1968 as suspect. =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 04-Aug-2010 Tide gauge at Alert was re-instated in January 2003. Same benchmark still used - data collated from the Fisheries and Oceans Canada webpage. =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 18-Jun-2019 Arctic station Alert has been reporting regularly.