This line chart visualizes weekly temperature data for San Francisco, mapping timestamps to the x-axis and temperature values to the y-axis. Built with React and D3 v5, it uses d3.scaleTime and d3.scaleLinear for scales, d3.line with curveNatural for the path, and d3.extent to set domains. SVG rendering includes custom axis components with timeFormat for weekday tick labels, while circle marks provide tooltips via the title element. The dataset is loaded from a CSV URL using d3.csv.