This visualization shows temperature readings across a week in San Francisco as a smooth, curved line chart. Time runs along the x-axis with day labels, while temperature appears on the y-axis, both using scales from `d3.scaleTime` and `d3.scaleLinear`. The line is generated with `d3.line` and `curveNatural`, and rendered as SVG paths within a React component. Data comes from a CSV file loaded via `d3.csv`, with axes built by custom React components that map ticks using D3's scale methods.