Graphic Yearbook

Tab. I.2 Limit values (LV) for the protection of ecosystems and vegetation according to the Act No. 201/2012 Coll.

Pollutant	Averaging interval	Assessment threshold [µg.m^-3]		Limit value [µg.m^-3] LV
Pollutant	Averaging interval	Lower LAT	Upper UAT	Limit value [µg.m^-3] LV
SO₂	year and winter period(1.10.-31.3.)	8	12	20
NO₂	calendar year	19.5	24	30

Pollutant	Averaging interval	Assessment threshold [µg.m^-3]		Limit value [µg.m^-3.h] LV
		Lower LAT	Upper UAT
O₃	AOT40, calculated from 1h values between May and July	—	—	18,000 average for 5 years

Note: AOT40 is the sum of differences between the hourly concentration higher than 80 μg.m^-3 (= 40 ppb) and the value 80 μg.m^-3 in the given period by using only hourly values measured every day between 8:00 and 20:00 CET.

Long-term objectives

Pollutant	Application	Averaging interval	Long-term objective [µg.m^-3.h]
O₃	for the protection of ecosystems and vegetation	AOT40, calculated from 1h values between May and July	6,000