condition	mean	min	max
4 h after light	2.4	2.4	2.4
8 h after light	2.25	2.1	2.4
12 h after light	1.65	1.3	2.0
4 h after dark	3.4	3.3	3.5
8 h after dark	9.6	2.8	16.4
12 h after dark	5.35	3.0	7.7