This stylized line chart visualizes weekly temperature data from San Francisco, plotting temperature against time with a smooth curve and circular markers. The visualization uses React to structure an SVG rendering, with D3 v7 providing the `scaleTime` and `scaleLinear` scales, the `line` generator with `curveNatural` for the path, and helper components for the axes. Data is loaded via `d3.csv` from a gist, and the chart includes interactive tooltips on each circle showing the formatted time and temperature value.