condition	mean	min	max
4 h after light	5.9	5.9	5.9
8 h after light	2.5999999999999996	2.3	2.9
12 h after light	6.55	6.3	6.8
4 h after dark	3.3	1.9	4.7
8 h after dark	20.75	18.6	22.9
12 h after dark	2.25	2.2	2.3