condition	mean	min	max
4 h after light	1.57422	1.5681	1.58034
8 h after light	2.07565	2.00174	2.14956
12 h after light	5.257705	5.22946	5.28595
4 h after dark	8.65445	8.28031	9.02859
8 h after dark	8.228895	7.75625	8.70154
12 h after dark	3.489745	3.38112	3.59837