condition	mean	min	max
4 h after light	16.7	16.7	16.7
8 h after light	16.95	4.3	29.6
12 h after light	3.15	1.8	4.5
4 h after dark	5.3	3.1	7.5
8 h after dark	9.25	3.8	14.7
12 h after dark	5.75	2.4	9.1