condition	mean	min	max
4 h after light	11.10153	8.59059	13.3803
8 h after light	9.54554	2.65492	15.9549
12 h after light	12.009503333333333	6.51131	18.0761
4 h after dark	19.072933333333335	16.2544	23.2008
8 h after dark	20.3953	15.6959	23.6894
12 h after dark	18.7109	17.2972	21.0347