2.3.1. Nitrogen dioxide (NO2), sulphur dioxide (SO2) and ammonia
(NH3)
The TMs prepared for NO2, SO2 and NH3 allow calculating both,
mean monthly and mean annual concentrations from percentual
variations in emissions for every activity. Additionally, the 19th
highest hourly concentration for NO2 as well as the 25th highest
hourly concentration and the 4th highest daily concentration for
SO2 can be computed (Table 1). Eqs. (2e4) represents the expressions
for calculating indicators for NO2, SO2 and NH3 respectively.