Series.Whiskers - Using the Quicktips Element
By default, a "quicktip" is displayed when the mouse hovers near or over a stem or whisker line. This is separate from the quicktips which are displayed for the chart bars.
The automatically-generated quicktip displays information for the low and high values, as shown above, left. However, you may want to display other information or format it differently, perhaps as shown above, right, which can be done by adding a Quicktip child element beneath Series.Whiskers and setting its attributes and child elements. Use @Chart tokens to include chart data in the quicktip and intrinsic functions are supported in the Quicktip element attributes.