This grouped bar chart displays quarterly values for 2019 and 2020, with bars colored steelblue and sized using a linear scale. The visualization loads CSV data from a GitHub gist, converts the numeric fields from millions, and renders rectangular bars via SVG. It uses d3.scaleLinear and d3.scaleBand to map data to positions, with axes created using d3.axisLeft and d3.axisBottom. The chart includes margins and appends all elements to a single SVG group.