No predictions loaded for 1994. This site serves NOAA predictions from its own store, and this period has not been fetched for Berkeley 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/ca/berkeley-9414816/1994
Berkeley, CA tide table 1994 (printable) · Tide Almanac