Pset_SpaceLightingRequirementsDefinition from IAI: Properties related to the lighting requirements that apply to the occurrences of IfcSpace or IfcZone. This includes the required artificial lighting, illuminance, etc.IfcSpace, IfcZone entity.IfcSpaceIfcZoneArtificialLightingIndication whether this space requires artificial lighting (as natural lighting would be not sufficient). (TRUE) indicates yes (FALSE) otherwise.IlluminanceRequired average illuminance value for this space.