This visualization displays daily average air temperatures in Belgium throughout 2021, using a red line chart with a natural curve to connect 365 data points. The React-based application loads CSV data from a GitHub gist and renders the chart as SVG using D3 v7 scales (scaleTime, scaleLinear), axes, and the d3.line generator with curveNatural interpolation. The y-axis labels temperature in Celsius, while the x-axis shows time in month-year format, providing a clear overview of seasonal temperature variations across the year.