condition	mean	min	max
4 h after light	8.3	8.3	8.3
8 h after light	14.55	13.3	15.8
12 h after light	2.5	2.2	2.8
4 h after dark	4.35	3.6	5.1
8 h after dark	5.7	2.5	8.9
12 h after dark	2.95	1.9	4.0