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Typical Illumination Measurements
| Outdoor Illumination | Light in Footcandles | | Direct Sunlight | 10,000 - 13,000 fc | | Full Daylight | 1,000 - 2,000 fc | | Overcast Day | 100 fc | | Twilight | 1 fc | | Deep Twilight | 0.1 fc | | Full Moon | 0.01 fc | | Moonless Night | 0.0001 fc | | Overcast Night | 0.000001 fc | | Indoor Illumination | Light in Footcandles | | Assembly Line | 20 fc | | General Work Area | 30 fc | | Fine Assembly Work | 100 fc | | Retail Store | 50 fc | | Accounting Work | 50 fc | | Bank Lobby | 20 fc | | Offices | 50 fc | | Operating Table | 1,800 fc | To convert to lux multiply footcandles by 10.764 |
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