This example shows a grouped bar chart of shutter open time across months, with separate bars for Lesedi, meter, and meters measurements. The visualization uses D3 v5 to load data from a CSV file and render SVG elements. It employs scaleBand for the month categories and sub-groups, scaleLinear for the y-axis, and axisBottom/axisLeft to display the month names and measurement scale. The bars are drawn through selectAll and enter/append operations, with fixed width and height values based on the y-scale range.