This scatterplot visualizes temperature changes over time in San Francisco, using a filled area chart to emphasize the temperature range. The SVG rendering employs D3 v5’s `scaleTime` and `scaleLinear` for axes, `area` generator with `curveBasis` for smooth lines, and `axisLeft`/`axisBottom` with tick marks. Styled circles and a steelblue path highlight the data, while custom margins and labels (like “Temperature” and “Time”) frame the chart. Data is loaded as CSV from a VizHub dataset, parsed into numbers and dates, and mapped to the scales.