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Daylighting factor (DF %)

Hello, I am working on project where one of asked outputs is Daylighting factor. Seems like DF as output variable does not exist. In order to get it, as I found online, you need Ep - the illuminance of the point of reference (lx) and Eh.ext -the external horizontal illuminance (lx). Did anyone have problem to find it, and how did you solve it?

Daylighting factor (DF %)

Hello, I am working on project where one of asked outputs is Daylighting factor. Seems like DF as output variable does not exist. In order to get it, as I found online, you need Ep - the illuminance of the point of reference (lx) and Eh.ext -the external horizontal illuminance (lx). Did anyone have problem to find it, and how did you solve it?