> For the complete documentation index, see [llms.txt](https://swatplus.gitbook.io/io-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://swatplus.gitbook.io/io-docs/introduction-1/landuse-and-management/ovn_table.lum/ovn_mean.md).

# ovn\_mean

This is the value that is used by the model. The [ovn\_min](/io-docs/introduction-1/landuse-and-management/ovn_table.lum/ovn_min.md) and [ovn\_max](/io-docs/introduction-1/landuse-and-management/ovn_table.lum/ovn_max.md) values are included in the file to help users stay within reasonable ranges during calibration.