LAQN Monitoring Sites

2005 Air Quality Strategy Objective Statistics: All Objectives

Zoom	Achieved Exceeded   • •     No Data Closed   • •   Select monitoring sites to view What are the AQS Objectives

Bulletins Site Details Statistics Pollution Episodes

Your selected monitoring site » Harrow - Stanmore Air Quality Statistics: 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 (to date) The table below shows whether pollution levels recorded at the site you have selected remained within the Government's Air Quality Strategy Objectives in 2005. For further basic statistics click on the button below, or for more precise statistics, use the Statistics Calculator. Pollutant Objective Was it achieved? Value Sulphur Dioxide No. days 24hr mean >125ug/m3 YES 0 Sulphur Dioxide No. hours hourly mean >350ug/m3 YES 0 Sulphur Dioxide No. periods 15min mean >267ug/m3 YES 0 PM10 Particulate Annual Mean (ug/m3) YES 20 PM10 Particulate No. days 24hr mean >50ug/m3 YES 7 PM10 (redundant method) Annual Mean (ug/m3) YES 20 PM10 (redundant method) No. days 24hr mean >50ug/m3 YES 1 Nitrogen Dioxide Annual Mean (ug/m3) YES 27 Nitrogen Dioxide No. hours hourly mean >200ug/m3 YES 0 * Note that results are excluded where analysers have not returned valid data for at least 75% of the year. * Note - all results from TEOM PM10 analysers from 2004 onward are now converted to reference equiavlence using the volatile correction method. Results using the old 'TEOM*1.3' method are also shown for comparison where relevant. More information. Basic Stats Reports Wind Plot Change objective: all objectives annual mean nitrogen dioxide objective hourly mean nitrogen dioxide objective (no. of hours) annual mean PM10 objective daily mean PM10 objective (no. of days) 15 minute mean sulphur dioxide objective hourly mean sulphur dioxide objective daily mean sulphur dioxide objective rolling 8 hour mean ozone objective rolling 8 hour mean carbon monoxide objective