Tab. VI.2 Smog situations and regulations for O₃ in 2013 – number and duration

SVRS area	Number of announcements		Duration [h]
	Smog situation	Alert	Smog situation	Alert
Agglomeration of Prague	2	–	81	–
Central Bohemia zone	2	–	81	–
Liberec region	2	–	42	–
Ústí nad Labem region	3	–	111	–
Plzeň region	1	–	20	–
South Bohemia region	2	–	99	–
South Moravia region without agglomeration of Brno	2	–	49	–
Agglomeration of Brno	1	–	25	–
Moravia-Silesia zone	1	–	47	–
Czech Republic in total	16	–	553	–

Note: Included only the SVRS areas in which at least one smog situation was announced. The duration of the smog situation includes also the duration of the alert, if announced.