This fork of AQI data for Bangor, Maine visualizes pageviews over time as a scatterplot, with each circle representing a game, virtual space, or quiz. The chart uses checkboxes to toggle category visibility, animating opacity and circle radius with transitions. The visualization leverages D3’s `csv`, `scaleTime`, `scaleLinear`, and `extent` APIs to load data and map dates to the x-axis and pageviews to the y-axis. Hover interactions trigger a tooltip, and the SVG rendering shows circles with a fixed fill color.