condition	mean	min	max
4 h after light	4.0	4.0	4.0
8 h after light	9.6	3.3	15.9
12 h after light	4.0	2.5	5.5
4 h after dark	18.95	1.0	36.9
8 h after dark	9.6	3.2	16.0
12 h after dark	2.25	1.3	3.2