I category - Clean or insignificantly polluted air. Pollutant concentrations
are lower than recommended levels.
II category - Pollutant concentrations are lower than limit levels, but higher
than recommended levels.
III category - Overpolluted air. Pollutant concentrations are higher than
limit levels.
R - residential: Mainly residential area, no industry, lower population and traffic
density.
DEMETROVA ULICA (old town) SO2, Black smoke,
KSAVERSKA CESTA (northern part) SO2, Black smoke,
TSP, NO2,
Pb, Fe,
Mn, Cu,
Cd, Zn
UTRINE ("New Zagreb", southern part) SO2, Black smoke,
SIGET ("New Zagreb", southern part) NO2
IR - industrial-residential: Mixed industrial and residential area. Moderate
population and traffic density.
B. FILIPOVICA (western part) SO2,
Black smoke, NO2, NH3
OZALJSKA ULICA (south-western part) SO2, Black smoke,
SUSEDGRAD (western part) SO2,
Black smoke, TSP,
PESCENICA (Eastern part) NO2
Air pollution in Zagreb (home page), Concentration limit values, Methods, Monitoring data