condition	mean	min	max
4 h after light	4.129123333333333	4.02146	4.21758
8 h after light	4.11582	4.02956	4.23102
12 h after light	4.358786666666667	4.27114	4.41834
4 h after dark	4.198826666666666	4.13132	4.282
8 h after dark	4.32269	4.11104	4.49779
12 h after dark	4.41313	4.22954	4.60905