This interactive scatter plot visualizes USA flights on-time performance, showing relationships between days of the month and delay metrics. Users can select different y-axis attributes (DEP_DELAY, DEP_DEL15, ARR_DELAY, ARR_DEL15) via dropdown menus built with ReactDropdown. The visualization uses React with D3 scales (scaleTime, scaleLinear) to map data into SVG marks, with custom axis components rendering tick marks. Data is loaded from a CSV file using d3.csv, with each point rendered as a circle containing a title tooltip.