condition	mean	min	max
4 h after light	19.090480999999997	17.591063	20.589899
8 h after light	16.2319655	13.376902	19.087029
12 h after light	15.7055745	14.546246	16.864903
4 h after dark	19.0865145	19.047689	19.12534
8 h after dark	18.480259	18.263629	18.696889
12 h after dark	18.87841	18.87841	18.87841