This interactive area chart displays the monthly count of Hubway bike-sharing trips over time, with data loaded from a remote TSV file. The visualization uses D3 v7’s `d3.rollups` to aggregate trip records by month and `d3.area` with a monotone curve to render the filled path. Hovering over any of the plotted circles triggers a tooltip showing the exact month and trip count. The SVG chart includes rotated time-axis labels and axis generators `d3.axisBottom` and `d3.axisLeft`.