This stacked bar chart shows the count of Up, Down, and Failed statuses across five days, with each layer’s height representing the cumulative value. It uses D3 v3’s `d3.layout.stack` and `d3.scale.ordinal` for the x-axis, `d3.scale.linear` for the y-axis, and a `d3.scale.category10` color scale for the status categories. The data is loaded from a CSV file, and the chart renders as SVG within a React framework, with axes and a color legend added via `d3.svg.axis` and `d3.legend.color`.