average function excluding zero fields

[#1]

I want to display an average setup time for machines, however some days some machines don't have a setup, so the setup time is zero for those days. How can I exclude this data?

[shraddha_g]

From Add-ons Section  of chart uncheck show zero values.

It might help.

[sunny_talwar]

May be like this:

Avg({<Date = {"=Sum(Setup) <> 0"}>}Setup)