Municipality of Thessaloniki        Air pollution kiosk-Ι. Dragoumi & Egnatia        A.u.th., Old S.P.S. Building        Air pollution kiosk-Lagada 161        Air pollution kiosk-25th Martiou & Karakasi        City Hall of Thessaloniki        Faculty of Education Building, A.U.Th. (Temporarily Inactive)        A.U.Th., New S.P.S. Building (Inactive)        Volou 3