condition	mean	min	max
4 h after light	2.3	2.3	2.3
8 h after light	4.75	4.0	5.5
12 h after light	2.4	1.9	2.9
4 h after dark	7.15	2.2	12.1
8 h after dark	19.2	16.0	22.4
12 h after dark	6.3999999999999995	2.6	10.2