View the Chart Help. This contains useful advice on how best to use the chart and extract the information you require from it.

• Zoom in on a time range by dragging the mouse over the desired dates and releasing
• To revert back to original chart, change date range or right click on chart
• Select comparative data via the Settings button, then click Go to redraw
• Detach button allows you to expand chart to full screen size You can launch a detailed and illustrated Help text from the main pop-up window.