_:genid1 . _:genid1 "" . _:genid2 . _:genid2 . _:genid3 . _:genid3 . "psmsl-permanent-service-mean-sea-level-philadelphia-pier-9n" . "Permanent Service for Mean Sea Level: PHILADELPHIA (PIER 9N)"^^ . "2013"^^ . _:genid1 . . "Permanent Service for Mean Sea Level tide gauge data for Station: Philadelphia (Pier N9)"^^ . _:genid2 . _:genid3 . . . _:genid4 . _:genid4 . _:genid4 . _:genid4 .