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County Site Units 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
East Anglia Norwich Lakenfields AURN µg/m³ 45.5 41.5 37.8 35.5 34 31.8 30.8 30 30.8 33.5 36.8 40.5 45.8 49.5 53 56.3 58 57.8 56.3 53 48.3 44.3 39.3 33.5
East Anglia Weybourne AURN µg/m³ 68.5 66.3 63.3 60.8 59.5 59 59.5 59.8 60.3 60.5 61.5 62.5 63.8 65.5 67.5 69.3 70.8 72 72.8 73.5 73.3 70.5 66.8 63
London London Haringey Priory Park South AURN µg/m³ 42 40.5 38.5 34.5 31 29.3 29.8 31.8 34.8 39.5 44.3 50.3 56.5 60.3 62.3 64.3 64 61.3 59.8 55.8 49.5 42 34 25.5
Midlands Leicester University AURN µg/m³ 70.5 67.5 64 60.8 57 56 55 54.8 53 53 54.3 56.3 58.5 57.5 53.5 51.3 52.3 53.3 52 49.8 47.8 45.5 44.3 40
Midlands Nottingham Centre AURN CLOSED µg/m³ 73.5 71.3 70.3 69.3 68.3 67.8 66 63.5 60 59 59 58 56.8 56.3 56.3 57.3 58 57.5 56.3 55.3 52 45.5 38.5 31.3
Midlands Stoke-on-Trent Centre AURN µg/m³ 69.8 68.8 67.3 65.3 63.8 62 61.8 63 62 61 59.3 58 56.5 55.8 53.5 52 50.3 48.3 46.8 46.3 46.8 46.3 45 42.5
NE England Hull Freetown AURN µg/m³ 75.5 74.3 72.8 71.3 70.3 69.8 69.3 69.3 69.8 70 70.8 71.5 71.3 71.3 71.5 70.5 69.8 68.3 65.3 63.5 62.8 59.8 56 54.5
NE England Newcastle Centre AURN µg/m³ 79.8 79 77 75 74.3 73.3 70.8 67.8 62.5 57.3 51.5 47.8 44.3 42 39.8 38.5 39 40.8 44 44.8 45.5 45 44.8 42.3
NE England Sunderland Silksworth AURN CLOSED µg/m³ 84.5 83.8 82.5 81.3 80.8 80 79 76.3 72.5 68.3 65.5 63 59.3 57.3 55.8 55.3 56.8 58.8 59.3 60 61.3 60.5 59.8 56.3
NIRE Belfast Centre AURN µg/m³ 88.5 87.5 86.3 84.8 83 81 80 78.3 76.3 73.3 69.8 67.3 65.5 63.5 61.5 60.8 59.3 56.8 57.3 56.8 57.5 60 62.8 64.3
NW England Liverpool Speke AURN µg/m³ 82.3 80.3 78.5 77.3 75 72.8 71.5 70.8 69.8 69.5 69.3 68.8 69.3 70.3 72 73.3 75.8 77.8 78 78.3 78 78.3 77.5 75.8
NW England Preston AURN µg/m³ 80.3 78.8 77.5 76.8 74.5 72.3 69.3 66.8 66 66.8 68.5 69.3 70.8 71.3 73.5 76.3 78 78.5 78 78.3 78.3 78.5 77.5 77
NW England Wirral Tranmere AURN µg/m³ 87.3 84 81.3 78.8 77 74.8 73.8 73.3 73 72.5 71.5 71.8 72.8 75 77.3 79 80.3 81 82.5 83.5 83 82 81 79.3
SE England Canterbury AURN µg/m³ 53.8 49.3 43.8 36.5 29.5 23.3 22.5 25.3 29.3 32.5 38.5 45.5 53.3 60.5 66 69.8 73 76.8 78.8 80.3 79 76.5 71.8 64.8
SE England Portsmouth AURN µg/m³ 23.5 24 24.8 25.3 26.5 27.5 28.5 30.5 33 36 39 42.8 48 52.5 58 63 66.3 68 68.8 68.8 65.5 61.3 53.8 45
SE England Rochester Stoke AURN µg/m³ 74 69.3 65.5 60 54.8 51.8 51.3 51.3 52.3 55.5 59.5 64.8 70.3 74 78.8 81 83 84 84.3 81.3 76.8 73.5 67.3 61.3
SE England Southampton Centre AURN µg/m³ 30.5 30.3 31 32.3 31.3 29.5 30 32.3 36.8 39.8 42.3 42 42.8 42.5 42 39.8 35.5 32.8 27.3 25.5 22 19.3 16 12.5
SW England Bristol St Paul's AURN µg/m³ 60.8 64 68 71 70.3 67.5 66 64.8 63.5 63 62.8 62.5 63 65 68.3 71.8 74.8 75.3 75 74.8 73.3 71.3 67.8 62.8