A temperature time-series chart drawn in SVG shows how San Francisco temperatures fluctuate over one week, using a smooth natural curve to connect daily readings and small circles marking exact observations. Built with React and D3 v5, the visualization employs `scaleTime` for the x-axis and `scaleLinear` for the y-axis, while `line` with `curveNatural` renders the path. Data from the UCI Machine Learning Repository's week_temperature_sf.csv is loaded via `csv`, and hover tooltips display the day via `timeFormat("%a")`.