= Daylight factor
{wiki=Daylight_factor}
The daylight factor is a measure used in architecture and building design to assess the amount of daylight that penetrates a space, particularly in interior areas. It indicates the illumination level provided by natural light compared to the amount of daylight available outdoors. The daylight factor is expressed as a percentage and is calculated by comparing the internal illuminance at a specified point in a room with the outdoor illuminance under overcast sky conditions.
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