=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Marathon Shores     940/091 RLR(1972) is 11.5m below BM2
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993
Marathon Shores     940/091 RLR(1972) is 11.5m below BM2
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 29-Jul-1993
Many stations on the Gulf coast have large values for September 1961.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 09-Feb-2012
Marathon Shores is an Historic station. Last data received was that for 1974.
It no longer features in the NOAA website.