This pie chart visualizes YouTube channel analytics, categorizing weeks by watch time into low, medium, and high buckets based on data-driven quantiles. It uses D3.js version 6.7.0, loading CSV data and employing the reusable `pieChart()` function with configurable dimensions, inner radius for a donut style, and a legend. The chart displays labels and a legend title, rendering the distribution of weekly watch time hours through an SVG.