> 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/climate/atmo.cli/timestep.md).

# timestep

Time step of the atmospheric deposition data

| Option | Description    |
| ------ | -------------- |
| mo     | Monthly        |
| yr     | Yearly         |
| aa     | Average annual |