[Retracted] A Study on Nonvisual Effects of Natural Light Environment in a Maternity Ward of a Hospital in Cold Area

Figure 5

Illuminance values at each measuring point in the wards facing different directions under different weather conditions: (a) facing south, sunny; (b) facing south, cloudy all day; (c) facing north, sunny; and (d) facing north, cloudy all day.

(a)

(b)

(c)

(d)