condition	mean	min	max
4 h after light	2.6	2.6	2.6
8 h after light	4.25	3.5	5.0
12 h after light	1.45	1.4	1.5
4 h after dark	17.9	5.0	30.8
8 h after dark	4.6	4.1	5.1
12 h after dark	3.45	3.3	3.6