condition	mean	min	max
4 h after light	6.4511	6.03605	6.86615
8 h after light	4.540825	4.24541	4.83624
12 h after light	5.516415	5.29657	5.73626
4 h after dark	15.312850000000001	15.2588	15.3669
8 h after dark	13.4313	13.0456	13.817
12 h after dark	12.210899999999999	11.8033	12.6185