> For the complete documentation index, see [llms.txt](https://docs.innofalls.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.innofalls.com/getting-started/data-fields/delta-fields.md).

# Delta Fields

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

<figure><img src="https://3415705954-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9tIV2XT53haGp6nlAPXL%2Fuploads%2Fgit-blob-38f970917c2de1eef890fe1d94d3b7d35388639f%2Fimage.png?alt=media" 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).