This visualization displays yearly average temperatures as a filled area chart, with a steel-blue region rising and falling across the time series. The SVG rendering uses d3.area() to generate the path, scaling the x-axis by year and the y-axis by temperature values. Data loads from a remote CSV via d3.csv, with axes labeled “Year” and “Avg Temperature (°C)”. The chart applies d3.scaleLinear for both dimensions and formats tick labels with d3.format for integer years, highlighting overall temperature trends over time.