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Choropleth Maps

  • Blank areas are local authorities with missing data. These are: Boston, Oadby and Wigston, North Northampton, West Northampton, Gravesham, Adur, Isles of Scilly and Richmondshire. 

  • The range in the pollution data has decreased. The highest PM10 value in 2011 was 25.3 µg/m3 (there were 25.3 micrograms of PM10 pollutants in 1 cubic metre of air), whilst in 2021 this was 17.29µg/m3. This decrease is even more clear in the PM2.5 where the maximum value was 17.64µg/m3 in 2011 whilst in 2021 it was 9.49µg/m3.

  • For Happiness, the upper bound has been mostly constant with less than a 0.2 variation in the 'happy means'  throughout the years. This means that on a scale from 1 to 10, with 1 being "not at all" 10 being "completely", the responses to the surveys have remained largely the same. 

  • Greater London, South East England, and Yorkshire and The Humber have consistently shown higher levels of pollution compared to other England regions. Areas with most pollution tend to be in metropolitan areas. 

  • An outlier to this trend is in the Yorkshire and The Humber region directly below the Humber Estuary where the port of Grimsby & Immingham is located. In terms of cargo volume, this was the largest port in the UK between 2011-2019 and has been the second largest since 2020. This may account for the higher emissions shown in a less densely populated area. References for the port's freight statistics are available here: a,b,c,d,e,f,g,h,i, j,k.

A choropleth map slideshow to show the variations in PM10 concentrations and reported 'happy means' across England, in each year from 2011-2021
A choropleth map slideshow to show the variations in PM2.5 concentrations and reported 'happy means' across England, in each year from 2011-2021
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