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Legend:
Air Quality Index Value
EU Standards are
exceeded by one
pollutant or more		   > 1
EU Standards are
fulfilled on average		   1
The situation is better
than the norms requirements on average		   < 1
Prague Yearly Air Quality Index

Year NO2 Year average PM10 year average PM10 exceedences daily average O3, # of days with 8-hour average >=120µg/m3 SO2 year average Benzene year average City Index
2003 1 1.01 1.01 - 0.38 - 1.01
2004 1 0.88 0.88 - 0.25 - 0.92
2005 1.06 0.95 0.95 - 0.26 - 0.99
2007 1.04 0.81 1.31 0.12 0.25 - 1.06
2008 1.04 0.63 0.54 0.04 0.23 - 0.74
2009 0.99 0.7 0.77 0 0.25 - 0.82

Prague Roadside Annual index chart



Year NO2 Year average PM10 year average PM10 exceedences daily average O3, # of days with 8-hour average >=120µg/m3 SO2 year average Benzene year average City Index
2003 0.72 0.89 0.89 - 0.32 0.28 0.83
2004 0.61 0.78 0.78 - 0.23 0.32 0.72
2005 0.64 0.78 0.78 - 0.23 0.32 0.73
2007 0.52 0.65 0.77 1.24 0.28 - 0.8
2008 0.52 0.59 0.4 0.92 0.17 0.16 0.61
2009 0.52 0.64 0.57 0.6 0.2 0.2 0.58

Prague Background Annual index chart

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