british accent, structured as (executive summary, brief answers to questions, introduction, main body and conclusion) 1) Using data from the National Air Quality Archive establish whether all relevant air quality standards for O3, PM10 and NO2 as expressed within the National Air Quality Strategy were met at the three sites in 2008 and in 2013. Note O3 data is not available for Headingley. Discuss whether or not improvements have been seen in the number of exceedances. 2) Plot the diurnal average for each available pollutant across the whole year (i.e. each hour averaged across the 365 days -> 24 points) and the 24 hour average for each day of the year for the 2008 data sets. Discuss the emissions, chemical and meteorological processes which may lead to the observed daily and seasonal trends and any peaks in concentrations. Files containing daily average meteorological data for the London (Heathrow) and Leeds areas for 2008 . You should attempt to explain any obvious differences between the sites in terms of local emissions profiles. Are there any similarities in the trends between the sites? How can this be explained when they are not close together geographically? How have weather patterns affected daily or seasonal peaks in pollution? 3) Is the air quality at the road-side sites adequate in terms of human health? What are the potential environmental and human health implications of UK sites exceeding the national standards for PM10, O3 and NO2? 4) Discuss the implications of your results with respect to future transport options. You should include a brief consideration of potential technical solutions or possible traffic management options in your discussion.