I have a plant nursery that is enclosed with Saran material (translucent). It has lighting that is connected to a timer switch that assures that it will be off at night time. No operations are expected at night. Nonetheless, the lighting could be interpreted as exterior lighting because of the opened nature of the plant nursery (it has no opaque surfaces anywhere). Does this lighting has to comply with no lumens above 90 degrees nadir as well? Thanks