indice ultravioletti a Annisquam (3 mi.) | indice ultravioletti a Gloucester Harbor (4 mi.) | indice ultravioletti a Essex (8 mi.) | indice ultravioletti a Plum Island South (10 mi.) | indice ultravioletti a Plum Island (Merrimack River Entrance) (15 mi.) | indice ultravioletti a Salem (16 mi.) | indice ultravioletti a Newburyport (17 mi.) | indice ultravioletti a Salisbury Point (19 mi.) | indice ultravioletti a Hampton Harbor (19 mi.) | indice ultravioletti a Lynn (22 mi.) | indice ultravioletti a Merrimacport (22 mi.) | indice ultravioletti a Gosport Harbor (Isles Of Shoals) (22 mi.) | indice ultravioletti a Riverside (Haverhill) (24 mi.) | indice ultravioletti a Boston Light (27 mi.) | indice ultravioletti a Deer Island (South End) (28 mi.) | indice ultravioletti a Jaffrey Point (28 mi.) | indice ultravioletti a Chelsea (28 mi.) | indice ultravioletti a Gerrish Island (29 mi.) | indice ultravioletti a Fort Point (29 mi.) | indice ultravioletti a Hull (29 mi.)