A scatterplot displays one week of temperature readings in San Francisco, with time on the x-axis and temperature in Celsius on the y-axis, using purple semi-transparent circles. The visualization uses D3 v5 APIs including `scaleTime`, `scaleLinear`, `axisBottom`, and `axisLeft` to render an SVG chart with gridlines and labeled axes. Data is loaded from a CSV file via `d3.csv`, with timestamps parsed as dates and temperatures converted to numbers.