Many stations on the Gulf coast have large values for September 1961.
Documentation added 2001-06-04
Vaca Key 940/089 RLR(1990) is 8.2m below BM NO 1 1975
Documentation added 2011-12-21
Using NOAA data the RLR diagram has been reviewed. Primary benchmark is now 3970 N 1999 1.724m above gauge datum. There is now no reference to previous Primary benchmark NO 1 1975 2.073m relative to gauge datum (TGZ).