condition	mean	min	max
4 h after light	2.1	2.1	2.1
8 h after light	6.85	4.3	9.4
12 h after light	10.1	6.0	14.2
4 h after dark	14.45	2.5	26.4
8 h after dark	4.1	3.9	4.3
12 h after dark	4.6	2.0	7.2