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annual sunlight exposure

[10.5.9.8] annual sunlight exposure (ASE)      

The fraction of the horizontal work plane that exceeds a specified direct sunlight illuminance level more than a specified number of hours per year over a specified daily schedule, with all operable shading devices retracted. [Ref. IES LM-83-12, IES Spatial Daylight Autonomy (sDA) and Annual Sunlight Exposure (ASE).]

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