This area chart visualizes temperature in San Francisco over time, using a maroon filled path with rounded curves to emphasize the trend. The visualization loads CSV data from a VizHub dataset, parsing timestamps and numeric temperatures before rendering with D3 v5’s `scaleTime`, `scaleLinear`, `area`, and `curveBasis` APIs. It includes custom axes with tick marks, rotated axis labels, and a title, all drawn as SVG elements. The data source is the Auto MPG dataset from UCI, though the code actually plots temperature data instead.