This area chart visualizes San Francisco temperature data over one week, with time on the x-axis and temperature on the y-axis. The chart uses D3 v5’s `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `area` with `curveBasis` to render a smooth maroon filled path within an SVG. Grid lines and axis labels are styled via CSS, and the data is loaded as CSV from a remote URL, parsed with `csv`, then processed by mutating each row’s timestamp and temperature values before rendering.