This line chart visualizes temperature fluctuations in San Francisco over a week, with time on the x-axis and temperature on the y-axis. The data is loaded from a CSV file at VizHub. The chart is rendered as an SVG using D3 v5, leveraging `scaleTime` and `scaleLinear` for the axes and the `line` generator with `curveBasis` to create a smooth path. Grid lines are drawn by customizing axis ticks, and the chart includes labels for both axes and a title.