During the summer e the highest mean NOx value of 33ppb was
recorded in the street canyon, while the lowest mean value of
17ppb was recorded in the urban park. The highest mean PM10
value of 42 mG/m3 was recorded also in the street canyon, but
interestingly the lowest mean value of 26 mG/m3 was recorded in
the urban square, while in the park a value of 33 mG/m3 was
recorded. Highest values of O3 were measured during dry hot spell
conditions (“Sharav”, on 29 June 2010). The maximum Ozone
values at all sites were recorded during midday and reached a value
of 84ppb in the street canyon, a value of 91ppb in the urban square
and a value of 94ppb in the urban park. CO concentrations at all the
investigated sites during the winter and the summer were very low
and insignificant (Table 3)