This line chart displays tree height in meters against the year planted, using data from a CSV file hosted on GitHub. The visualization loads the dataset with `d3.csv`, sorts it chronologically, and draws a monotone-smoothed line with `d3.line` and `curveMonotoneX`. Axes are generated via `d3.axisBottom` and `d3.axisLeft`, with labels for both variables. The SVG rendering is configured with fixed dimensions and margins, encoding the quantitative relationship between planting year and growth outcome.