Before you begin
You can set an upper bound and a lower bound, called thresholds, for metric values that are displayed in a chart. Thresholds help call attention to metric values that fall outside a particular range. The regions of the chart outside these thresholds have a customizable highlight color against which metric values exceeding the thresholds are displayed.
To set upper and lower threshold values for a chart:
The Chart Properties dialog box is displayed.
After you finish
The highlight color used for the regions of the chart that fall outside the thresholds can be customized. For information, see Set individual chart properties.