The present Directive establishes long-term objectives (Section III of Annex I), target values (Section II of Annex I), an alert threshold and an information threshold for concentrations of ozone in ambient air in the Community, with a view to avoiding, preventing or reducing harmful effects on human health and the environment as a whole. Member States shall ensure that up-to-date information on concentrations of ozone in ambient air is routinely made available to the public as well as to approp