Table 1.

Pollutants measured and corresponding time period by monitoring stations

Name (postal code area)	Pollutants	Time period*
Birmingham Centre (B)	PM10, SO2, NO2, NO, NOx, CO, O3	01/01/1996 to 31/12/2006
Birmingham East (B)	PM10, SO2, NO2, NO, CO, O3	01/01/1996 to 03/08/2004
Birmingham Tyburn (B)	PM10, SO2, NO2, NO, CO, O3	16/08/2004 to 31/12/2006
Oldbury (B)	PM10, SO2, NO2, NO, NOx, CO, O3	27/06/1997 to 20/09/1998
West Bromwich (B)	PM10, SO2, NO2, NO, NOx, CO, O3	04/11/1998 to 31/12/2006
Coventry Centre (CV)	PM10, SO2, NO2, NO, NOx, CO, O3	19/02/1997 to 31/12/2006
Coventry Memorial (CV)	PM10, SO2, NO2, NO, NOx, CO, O3	26/02/2001 to 31/12/2006
Walsall Alumwell (WS)	NO2, NOx	01/01/1996 to 31/12/2006
Walsall Willenhall (WS)	NO2	13/05/1997 to 31/12/2006
Wolverhampton Centre (WV)	PM10, SO2, NO2, NO, NOx, CO, O3	19/12/1995 to 31/12/2006

*Period with at least one pollutant being measured and taking into account missing data between start and end dates.