condition	mean	min	max
4 h after light	4.2	4.2	4.2
8 h after light	13.6	1.5	25.7
12 h after light	10.3	8.4	12.2
4 h after dark	2.0	1.5	2.5
8 h after dark	1.95	1.6	2.3
12 h after dark	7.4	4.9	9.9