This stylized bar chart displays the total number of available bikes per hour, aggregated from a CSV file of Vélib’ station data. Built with React and D3 v7, the visualization loads the dataset via `d3.csv`, groups entries with `d3.rollups`, and sorts the results to highlight the top ten busiest hours. The code uses `d3.scaleBand` and `d3.scaleLinear` to position colored rectangles, with SVG axes and labels rendered through custom React components, all styled with the Poppins font.