condition	mean	min	max
4 h after light	17.7	17.7	17.7
8 h after light	4.2	1.7	6.7
12 h after light	11.8	2.3	21.3
4 h after dark	0.85	0.5	1.2
8 h after dark	4.95	2.5	7.4
12 h after dark	2.75	1.4	4.1