No predictions loaded for 2003. This site serves NOAA predictions from its own store, and this period has not been fetched for Greys Island 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/ak/greys-island-9451238/2003
Greys Island, AK tide table 2003 (printable) · Tide Almanac