This fork shows a week of San Francisco temperatures as a filled area chart over time. The chart renders an SVG path using `d3.area` with a `curveBasis` smoothing, while `d3.scaleTime` and `d3.scaleLinear` map timestamps and temperatures to axes. Axis labels and gridlines are drawn with `d3.axisBottom` and `d3.axisLeft`. Data loads from a remote CSV containing hourly temperature readings, parsed with `d3.csv` into `Date` and numeric values.