This bar chart displays temperature readings for six labeled controllers, ranging from 5 to 60 degrees. The data is loaded from a local CSV file and rendered as SVG rectangles with axes. Built with D3 v5, it uses `scaleBand` and `scaleLinear` for positioning, `axisBottom` and `axisLeft` for tick marks, and `csv` for data parsing. Each bar’s height corresponds to its temperature value, with the y-scale inverted to align with the SVG coordinate system.