This area chart visualizes average depression levels across letter grades A through F, split by male and female students. The data comes from a CSV file loaded via `d3.csv` and is aggregated with `d3.mean` for each gender and grade combination. Rendered as SVG using `d3.area` with a monotone curve, the chart also includes tooltips on circles for precise values, axis labels, and a legend. Color encoding distinguishes genders through `d3.scaleOrdinal`, with hover interactions managed by event listeners.