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

Table 2

Year-round time percentage of Stim.freq at each level (8 : 00-12 : 00).

	Measuring point A	Measuring point B	Measuring point a	Measuring point b	Measuring point c	Measuring point d
0 d/wk	12%	0%	4%	0%	0%	0%
1 d/wk	9%	0%	3%	0%	0%	0%
2 d/wk	6%	0%	5%	0%	0%	0%
3 d/wk	5%	1%	6%	1%	2%	0%
4 d/wk	8%	4%	13%	8%	8%	1%
5 d/wk	11%	14%	14%	16%	16%	4%
6 d/wk	20%	25%	23%	24%	23%	6%
7 d/wk	29%	56%	32%	51%	51%	89%
≥5 d/wk	60%	95%	69%	91%	90%	99%