A double bar chart compares user counts and access counts for six application modules. The chart renders horizontally as diverging bars from a central axis, with user counts extending left and access counts extending right, using D3 v7 with SVG. Each bar’s length is normalized against its respective maximum via a custom utility function, and colors encode intensity using dynamic RGB values. Axis labels include counts in parentheses, and the data is loaded asynchronously from a JSON file.