This line chart displays the weekly temperature variation in San Francisco, with time on the x-axis and temperature on the y-axis. The visualization uses D3 v5’s `scaleTime`, `scaleLinear`, `line` generator with `curveBasis`, and `axisLeft`/`axisBottom` to render the smooth path and labeled axes. Data is loaded asynchronously from a CSV file and parsed into `Date` objects before being passed to the render function. The SVG output includes gridlines and a title, with the line path styled in maroon.