Statistical Tools » Air Quality Objectives

Air Quality Strategy Objectives Generated for the 12 month period commencing » 1-jan-2006

Pollutant Objective Result Achieved
Objective
Site selected » Kensington and Chelsea - Cromwell Road
Carbon Monoxide 10 mg/m3 as a maximum daily running 8 hour mean 0 YES
Nitrogen Dioxide 200 ug/m3 as a 1 hour mean, not to be exceeded more than 18 times a year 4 YES
Nitrogen Dioxide 40 ug/m3 as an annual mean 83 NO
PM10 (redundant method) 40 ug/m3 as an annual mean 40 YES
PM10 (redundant method) 50 ug/m3 as a 24 hour mean, not to be exceeded more than 35 times a year 60 NO
PM10 Particulate 40 ug/m3 as an annual mean 34 YES
PM10 Particulate 50 ug/m3 as a 24 hour mean, not to be exceeded more than 35 times a year 36 NO
Sulphur Dioxide 125 ug/m3 as a 24 hour mean, not to be exceeded more than 3 times a year 0 YES
Sulphur Dioxide 266 ug/m3 as a 15 minute mean, not to be exceeded more than 35 times a year 0 YES
Sulphur Dioxide 350 ug/m3 as a 1 hour mean, not to be exceeded more than 24 times a year 0 YES
Site selected » Kensington and Chelsea - Kings Road
Nitrogen Dioxide 200 ug/m3 as a 1 hour mean, not to be exceeded more than 18 times a year 136 NO
Nitrogen Dioxide 40 ug/m3 as an annual mean 96 NO
Site selected » Westminster - Marylebone Road
Carbon Monoxide 10 mg/m3 as a maximum daily running 8 hour mean 0 YES
Nitrogen Dioxide 200 ug/m3 as a 1 hour mean, not to be exceeded more than 18 times a year 665 NO
Nitrogen Dioxide 40 ug/m3 as an annual mean 111 NO
Ozone 100 ug/m3 as an 8 hour mean, not to be exceeded more than 10 times a year 0 YES
PM10 (redundant method) 40 ug/m3 as an annual mean 47 NO
PM10 (redundant method) 50 ug/m3 as a 24 hour mean, not to be exceeded more than 35 times a year 151 NO
PM10 Particulate 40 ug/m3 as an annual mean 39 YES
PM10 Particulate 50 ug/m3 as a 24 hour mean, not to be exceeded more than 35 times a year 65 NO
Sulphur Dioxide 125 ug/m3 as a 24 hour mean, not to be exceeded more than 3 times a year 0 YES
Sulphur Dioxide 266 ug/m3 as a 15 minute mean, not to be exceeded more than 35 times a year 0 YES
Sulphur Dioxide 350 ug/m3 as a 1 hour mean, not to be exceeded more than 24 times a year 0 YES
Warning: Kensington and Chelsea - Cromwell Road - Sulphur Dioxide achieved a capture rate less than 90% for the year (88%). Results may not be representative of the full year and should be used for guidance only.
Warning: Westminster - Marylebone Road - Carbon Monoxide achieved a capture rate less than 90% for the year (66%). 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: Kensington and Chelsea - Cromwell Road - All data fully ratified
Warning: Kensington and Chelsea - Kings Road - All data fully ratified
Warning: Westminster - Marylebone Road - All data fully ratified
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