No predictions loaded for 2004. This site serves NOAA predictions from its own store, and this period has not been fetched for Port Deposit 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/md/port-deposit-8574008/2004
Port Deposit, MD tide table 2004 (printable) · Tide Almanac