índex ultraviolat a Annisquam (5 mi.) | índex ultraviolat a Plum Island South (5 mi.) | índex ultraviolat a Gloucester Harbor (6 mi.) | índex ultraviolat a Rockport (8 mi.) | índex ultraviolat a Salem (9 mi.) | índex ultraviolat a Plum Island (Merrimack River Entrance) (13 mi.) | índex ultraviolat a Newburyport (14 mi.) | índex ultraviolat a Lynn (15 mi.) | índex ultraviolat a Salisbury Point (16 mi.) | índex ultraviolat a Merrimacport (17 mi.) | índex ultraviolat a Riverside (Haverhill) (17 mi.) | índex ultraviolat a Hampton Harbor (18 mi.) | índex ultraviolat a Chelsea (21 mi.) | índex ultraviolat a Deer Island (South End) (22 mi.) | índex ultraviolat a Boston Light (22 mi.) | índex ultraviolat a Amelia Earhart Dam (Mystic River) (22 mi.) | índex ultraviolat a Charlestown (Charles River Entrance) (23 mi.) | índex ultraviolat a Boston (24 mi.) | índex ultraviolat a Hull (24 mi.) | índex ultraviolat a Moon Head (25 mi.)