Ashford Background closed on 07/04/2011. You can still view any information available using the Site Information tab, or find data in the Data section.
| Pollutants shown in graph | |
|---|---|
| Parameter | Parameter Name | 
| O3 | Ozone | 
| NO | Nitric oxide | 
| NO2 | Nitrogen dioxide | 
| NOXasNO2 | Nitrogen oxides as nitrogen dioxide | 
| PM10 | PM10 Particulate Matter | 
| T | Ambient Temperature | 
| PRES | Barometric pressure | 
| Parameter | Date Started | Date Ended | 
|---|---|---|
| Ozone | 01/10/2008 | 07/04/2011 | 
| Nitric oxide | 21/09/2008 | 07/04/2011 | 
| Nitrogen dioxide | 21/09/2008 | 07/04/2011 | 
| Nitrogen oxides as nitrogen dioxide | 21/09/2008 | 07/04/2011 | 
| PM10 particulate matter (Grav Equiv) | 21/09/2008 | 07/04/2011 | 
| Ambient Temperature | 21/09/2008 | 07/04/2011 | 
| Barometric pressure | 21/09/2008 | 07/04/2011 |