Figure 1   Approximate composition of urban particles

Figure 2   Annual average concentration of particulate sulphate across Europe ( µgS/m3)

 

Figure 3   Annual average concentrations of smoke (µgS/m3) at 3 urban sites between 1961 and 1994

 

Figure 4   Department of the Environment Automatic Monitoring for PM10 as at September 1995

 

Figure 5   The maximum daily average PM10 concentrations recorded for each month and site between 1992 and 1994 ( Based on 385 values)

 

Figure 6   Daily average concentrations of PM10 at six urban sites across the United Kingdom during November 1993