This example visualizes San Francisco weekly temperatures over time using a line chart. The code leverages React and D3 v7, loading data from a CSV file and rendering the chart as SVG. A natural curve is applied to the line path using D3's `line` and `curveNatural` functions, with custom tick components for the axes. The visualization is styled with the Poppins font and a teal color scheme, highlighting temperature trends while the code comments show optional data point circles and tooltips.