# Delta Fields

The Delta fields are used to create measures deviation charts, showing the difference between two measures.

<figure><img src="/files/x0sgcognQy5sFpr9jiPC" alt="" width="132"><figcaption><p>Delta Field 1 to 3</p></figcaption></figure>

Each field must be filled with exactly two measures. For each deviation chart the chart type can be selected individually.

For more details please read [Adding Deviation Charts](/chart-types/adding-deviation-charts.md).


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