condition	mean	min	max
4 h after light	1.3	1.3	1.3
8 h after light	40.95	39.8	42.1
12 h after light	27.35	2.1	52.6
4 h after dark	6.55	5.8	7.3
8 h after dark	50.8	46.7	54.9
12 h after dark	4.45	1.9	7.0