Know the locations, years and months represented, and the limits of the coverage.
Eight locations, two six-month periods
The Edexcel large data set contains daily weather records for May to October in 1987 and 2015. Familiarity with its variables and setting helps you interpret an extract. Learn what the records mean; you do not need to memorise calculated results. Questions supply the numerical extracts needed for calculations.
Five UK locations
Leuchars: Scotland
Leeming: North Yorkshire
Heathrow: Greater London
Hurn: Dorset
Camborne: Cornwall
Three international locations
Beijing: China
Perth: Western Australia
Jacksonville: Florida, USA
Perth is in the southern hemisphere. Its seasons run in the opposite part of the year to those of the UK.
June and September each have 30 days; May, July, August and October each have 31. Thus each location-year period spans