How do I find the evapotranspiration value using Energy Pluse [closed]

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Hi, I'm doing my graduation project. I'd like you to help me. I'm designing a smart farm now, so the evapotranspiration of the plant is important. Referring to the energy plus guide, it seems like I have to use something in ems, but I don't know how to do it. If I click ems tap, I don't think there's a table to enter a value. How do I get the evapotranspiration? I found this basic formula.