Options dialog - Calibration Parameters page

Use this page to set up ranges to be considered a good match and fair match between predicted and observed results.

This page is selected when you choose Tools | Options and select the Calibration Parameters tab.

Percentage difference

Definition of "Good"	The lower value (in the left box) is always zero. You can set the upper value from 1 to 100, although you would normally set it far below this. The default is 15.
Definition of "Fair"	The lower value (in the left box) is set automatically depending on what you entered for "Good". You can set an upper value up to 100, although this would be unusual. The default is 30.