=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991 Clearwater Beach 940/060 RLR(1985) is 8.3m below BM LP 10 RM1 =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 29-Jul-1993 Many stations on the Gulf coast have large values for September 1961. =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 21-Dec-2011 Using NOAA data the RLR diagram has been reviewed. Primary benchmark remains LP 10 RM 1 2.234m above gauge datum (TGZ)