This area chart visualizes a week of temperature data for San Francisco, with time on the x-axis and degrees Celsius on the y-axis. The data is loaded from a CSV hosted on VizHub using `d3.csv`. The SVG rendering uses `d3.scaleTime` and `d3.scaleLinear` for scales, `d3.axisBottom` and `d3.axisLeft` for labeled axes, and an `d3.area` generator with `curveBasis` to create the smooth maroon filled region. The visualization includes axis tick lines, padded ticks, and a title, with axis labels rotated for legibility.