This area chart visualizes one week of temperature data in San Francisco, sourced from the Data Canvas - Sense Your City initiative. The chart plots temperature values against time, with a smooth curve through the data points. The visualization uses the D3.js library (v5) with an SVG rendering approach, employing the `scaleTime`, `scaleLinear`, `axisLeft`, `axisBottom`, and `area` APIs to construct the chart, axes, and filled area under the curve. The data is loaded from a CSV file and transformed before rendering.