No predictions loaded for 1996. This site serves NOAA predictions from its own store, and this period has not been fetched for Port Gamble yet. Nothing is estimated or interpolated in its place. NOAA's own page for the station has the official table: tidesandcurrents.noaa.gov.
tidealmanac.site/us/wa/port-gamble-9445059/1996
Port Gamble, WA tide table 1996 (printable) · Tide Almanac