=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 29-JUL-93 :
Many stations on the Gulf coast have large values for September 1961.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-JUN-91 :
Panama City         940/042 RLR(1986) is 9.7m below BM L 9108 1977
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 21-Dec-2011 :
Using NOAA data the RLR diagram has been reviewed. Primary benchmark remains L 9108 1977 3.965m above gauge datum (TGZ)

