What is Input M/Z Range?

This is an option to limit the x-axis of your raw ESI data, the m/z ratio. For example, you may have a large background noise peak at m/z 615 that you do not want to include in the input spectrum. You can try setting the lower number to m/z 630 or 650 to avoid having this peak contribute in the results. The same logic applies for the upper end of the m/z range.