Describing a line graph: average monthly temperatures in London, New York and Sydney A line chart depicts changes over 12 months, showing the average number of hours of sunshine in London, New York and Sydney. Cities are represented by three curves, months from January to December appear on the horizontal axis, and temperature scale from 0 to 35 is on the vertical axis. According to the table total annual hours of sunshine for London, New York and Sydney are 1180, 2535 and 2473 respectively. It may be seen clearly that New York turns out to be the city with the highest sunshine hours, while London has the lowest. As for the line chart New York and London reveal similar trends, the temperatures in these cities tend to be low in the period from January to March then gradually increase by the middle of July reaching the maximum temperatures of about 23 and 29 degrees for London and New York accordingly. Consequently numbers dropped off steadily by December. The curve referring to Sydney shows quite the opposite trend, the maximum temperatures of about 30 degrees can be observed in January and December, whilst minimum temperatures are in July.