The chart is interactive. To zoom, click on the chart and drag to highlight a time period. Once zoomed in, pan by holding the shift key as you click and drag the graph. Double-click to zoom out.
Select a light or dark color scheme for the chart and the controls.
Select a logarithmic or linear scale for the y-axis of the chart.
Turn on the legend. By default, it displays when you hover over the chart.
The hidden volume rate is the total volume of trades against hidden orders
divided by the total volume of all trades in percent.