condition	mean	min	max
4 h after light	3.9	3.9	3.9
8 h after light	4.85	2.0	7.7
12 h after light	1.35	0.9	1.8
4 h after dark	0.9	0.7	1.1
8 h after dark	2.2	1.0	3.4
12 h after dark	2.1	1.3	2.9