condition	mean	min	max
4 h after light	1.4	1.4	1.4
8 h after light	2.9	1.9	3.9
12 h after light	4.25	3.4	5.1
4 h after dark	14.0	7.8	20.2
8 h after dark	5.0	3.7	6.3
12 h after dark	4.5	2.4	6.6