Double Line Chart
The Double Line Chart allows you to display, side by side on the same graph, two types of measurements having different physical dimensions. You can specify the size of the graph, its design (colors, design, etc.), scales, interpolation methods, etc.
This chart displays daily values or historical values.
Refresh occurs at page load (with or without ajax preload) or automatically (every 2 minutes for daily data or every 1 hour for historical data).