This chart visualizes temperature fluctuations over a week in San Francisco, combining a stylized line graph with a translucent shaded area beneath the curve for emphasis. Built with React and D3 v5, it uses `scaleTime` and `scaleLinear` for axes, while `area()` and `line()` from D3, paired with `curveNatural`, create the smooth path. The SVG rendering is populated from CSV data fetched via `csv` from a Gist.