Total Oxidant Concentrations

The table below provides the 99.8th percentile concentrations of total oxidant (i.e. NOx+O3, as NO2) for all AURN sites where data is available, for the 2013-2015 period.

This data can be used as input data within the Industrial Screening Tool, to determine the maximum NOx emissions (in tonnes per annum) from a stack, for which there should be no risk of exceedance of the NO2 short-term (1-hour mean) air quality objective.

See para 7.29 and Box 7.13 of Technical Guidance LAQM.TG(16) for more information.

Site Name 99.8th Percentile of Total Oxidant Concentration (µg/m3 as NO2)
2013 2014 2015 2013 to 2015
Aberdeen 105.8 113.5 122.5 118.0
Aston Hill 134.8 121.3 124.4 123.8
Barnsley Gawber 121.6 110.6 108.4 116.0
Belfast Centre 122.2 117.7 133.7 125.3
Birmingham Acocks Green 146.2 137.3 124.3 138.7
Birmingham Tyburn 152.2 133.8 142.2 143.0
Birmingham Tyburn Roadside 147.4 163.4 148.6 154.2
Blackpool Marton 134.4 119.7 133.4 130.3
Bournemouth 149.8 128.2 133.0 135.8
Brighton Preston Park 152.6 130.9 135.3 141.5
Bristol St Paul's 142.6 131.2 123.1 134.9
Bush Estate 114.8 109.7 130.6 117.8
Canterbury 162.0 147.6 148.1 152.6
Cardiff Centre 150.5 123.5 124.6 132.9
Charlton Mackrell 148.4 121.0 130.2 135.6
Coventry Allesley No Data 122.3 151.5 144.1
Coventry Memorial Park 129.9 129.9 No Data 130.0
Cwmbran 140.6 120.9 119.1 124.9
Derry 107.9 102.3 115.3 107.2
Edinburgh St Leonards 110.9 116.0 123.6 116.2
Eskdalemuir 112.3 115.5 130.5 117.1
Exeter Roadside 141.9 122.1 133.0 134.3
Fort William 111.7 123.5 145.0 132.7
Glasgow Townhead 131.7 118.2 122.8 124.6
Glazebury 116.6 113.0 121.8 116.8
Harwell 120.8 121.9 133.6 124.5
High Muffles 120.6 127.4 153.6 130.9
Hull Freetown 126.8 123.5 121.0 125.0
Ladybower 120.0 117.8 85.5 119.8
Leamington Spa 141.3 131.3 130.5 133.1
Leicester Centre 125.2 No Data No Data 125.2
Leicester University 90.8 132.8 138.3 134.3
Leominster 136.4 122.9 130.1 127.5
Liverpool Speke 136.0 119.2 131.4 129.3
London Bloomsbury 161.2 138.7 155.6 154.6
London Eltham 137.2 118.4 141.1 133.2
London Haringey Priory Park South 148.9 137.8 148.6 146.5
London Harlington 183.7 140.2 150.1 165.6
London Hillingdon 189.1 158.1 154.5 167.6
London Marylebone Road 239.6 226.2 230.3 231.7
London N. Kensington 168.0 137.7 154.6 157.0
London Teddington 172.1 129.1 152.3 153.4
London Westminster 158.7 No Data No Data 158.7
Lullington Heath 133.1 112.5 97.8 122.7
Manchester Piccadilly 121.2 128.3 142.3 131.6
Manchester South 130.4 123.6 134.3 129.0
Market Harborough 136.4 133.5 134.4 136.2
Middlesbrough 117.4 119.1 128.0 122.2
Mold 129.8 No Data No Data 129.8
Narberth 127.6 111.0 117.1 121.4
Newcastle Centre 121.4 119.2 122.2 120.9
Northampton Kingsthorpe 145.8 133.0 143.8 141.6
Norwich Lakenfields 113.6 121.5 131.7 121.5
Nottingham Centre 136.1 136.5 122.6 134.9
Peebles 98.5 118.8 134.5 118.9
Plymouth Centre 133.4 130.4 127.6 130.4
Port Talbot Margam 135.3 125.0 130.5 130.4
Portsmouth 131.5 137.2 126.2 132.8
Preston 125.9 124.4 144.4 129.9
Reading New Town 149.6 127.7 131.3 140.3
Rochester Stoke 129.0 132.3 120.4 128.9
Salford Eccles 131.8 No data No data 131.8
Sheffield Centre 136.0 No data No data 136.0
Sheffield Devonshire Green 137.7 134.2 150.7 137.4
Southampton Centre 135.9 131.1 129.8 133.2
Southend-on-Sea 144.8 136.2 143.3 142.7
St Osyth 134.2 133.2 143.8 136.1
Stoke-on-Trent Centre 135.3 121.9 137.9 133.5
Sunderland Silksworth 122.5 124.6 117.6 123.2
Thurrock 131.0 125.7 131.3 129.1
Walsall Woodlands 149.2 135.3 129.9 139.0
Wicken Fen 143.4 122.0 156.8 147.2
Wigan Centre 132.8 121.6 129.6 128.3
Wirral Tranmere No data 96.4 119.0 116.3
Yarner Wood 131.2 117.6 133.8 129.4

This table is expected to be updated from time to time, so has been removed from LAQM.TG(16) to enable these amends to take place.

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