condition	mean	min	max
4 h after light	1.1	1.1	1.1
8 h after light	0.8	0.7	0.9
12 h after light	1.7	1.5	1.9
4 h after dark	1.5	1.3	1.7
8 h after dark	0.9	0.7	1.1
12 h after dark	1.75	1.1	2.4