This line chart visualizes daily temperature readings in San Francisco over time. The chart uses a smooth, curved line to connect data points, with labeled axes for time and temperature in Celsius. The visualization is built with D3 v5, using `scaleTime` and `scaleLinear` for the axes, and `curveBasis` for the line’s smoothing. The data is loaded from a CSV file hosted online, with the SVG rendered entirely through D3’s low-level API.