This area chart visualizes weekly visits to Dallas-Fort Worth public libraries across 52 sequential weekly observations. The chart uses D3 v7’s `d3.area` generator with a linear scale for both axes, filling the region beneath the line with a light blue `#9ecae1` and overlaying a darker stroke. Data is loaded from a CSV via `d3.csv`, with numeric values parsed to remove commas. The y-axis includes gridlines and a “Weekly Visits” label, while the x-axis displays integer index ticks with a “Library Index” label.