Use
You can set minimum, optimum and maximum value ranges, specify whether they are to be displayed in the graphic and give them a title.
Prerequisites
If the scale style is Time the values will be expressed as dates. If the scale style is Linear or Logarithmic the values will be expressed as linear or logarithmic values respectively.
Procedure
Specifying a value range
Specifying whether a value is to be displayed
Specifying a title for a value