(footcandle}
{Place or Daylight)
4
ad
10
© Commercial stairways
@ Indoor golf range
@ Office with fluorescent lamps
@ Department
store counter
e@ Assembly
line
Standard
lHlumination
140 footcardles
(1,400 tux)
@ Sunlight one hour before sunset, clear day
@ Window side of an office with fluorescent lamps
@ Sunlight one hour after sunrise on a cloudy day
@ Sunlight at 10 AM, cloudy day
© Sunlight at noon, cloudy day
@ Sunlight at 3 PM, clear day
-
@ Suniight at 10 AM, clear day
@ Suntight at noon, clear day
—44—