Statistical Tools » Air Quality Objectives

Air Quality Strategy Objectives Generated for the 12 month period commencing » 1-jan-2014

Pollutant Objective Result Achieved
Objective
Site selected » Camden - Euston Road
Nitrogen Dioxide 200 ug/m3 as a 1 hour mean, not to be exceeded more than 18 times a year 220 NO
Nitrogen Dioxide 40 ug/m3 as an annual mean 104 NO
PM10 Particulate 40 ug/m3 as an annual mean 32 YES
PM10 Particulate 50 ug/m3 as a 24 hour mean, not to be exceeded more than 35 times a year 3 YES
Site selected » City of London - Walbrook Wharf
Nitrogen Dioxide 200 ug/m3 as a 1 hour mean, not to be exceeded more than 18 times a year 656 NO
Nitrogen Dioxide 40 ug/m3 as an annual mean 122 NO
Site selected » Wandsworth - Putney High Street
Nitrogen Dioxide 200 ug/m3 as a 1 hour mean, not to be exceeded more than 18 times a year 1537 NO
Nitrogen Dioxide 40 ug/m3 as an annual mean 123 NO
PM10 (redundant method) 40 ug/m3 as an annual mean 31 YES
PM10 (redundant method) 50 ug/m3 as a 24 hour mean, not to be exceeded more than 35 times a year 21 YES
PM10 Particulate 40 ug/m3 as an annual mean 28 YES
PM10 Particulate 50 ug/m3 as a 24 hour mean, not to be exceeded more than 35 times a year 16 YES
Site selected » Westminster - Oxford Street
Nitrogen Dioxide 200 ug/m3 as a 1 hour mean, not to be exceeded more than 18 times a year 1532 NO
Nitrogen Dioxide 40 ug/m3 as an annual mean 143 NO
PM10 Particulate 40 ug/m3 as an annual mean 32 YES
PM10 Particulate 50 ug/m3 as a 24 hour mean, not to be exceeded more than 35 times a year 7 YES
Warning: Camden - Euston Road - PM10 Particulate achieved a capture rate less than 90% for the year (9%). Results may not be representative of the full year and should be used for guidance only.
Warning: Camden - Euston Road - PM2.5 Particulate achieved a capture rate less than 90% for the year (11%). Results may not be representative of the full year and should be used for guidance only.
Warning: Westminster - Oxford Street - Nitrogen Dioxide achieved a capture rate less than 90% for the year (73%). Results may not be representative of the full year and should be used for guidance only.
Warning: Westminster - Oxford Street - PM10 Particulate achieved a capture rate less than 90% for the year (28%). Results may not be representative of the full year and should be used for guidance only.
Note 1: 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 in grey for comparison where relevant. More information.

Note 2: Ratification information is shown below. Results based on provisional data must be considered with care. Why?
Warning: Camden - Euston Road - All data fully ratified
Warning: City of London - Walbrook Wharf - All data fully ratified
Warning: Wandsworth - Putney High Street - All data fully ratified
Warning: Westminster - Oxford Street - All data fully ratified
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