condition	mean	min	max
4 h after light	3.9	3.9	3.9
8 h after light	13.2	10.4	16.0
12 h after light	7.5	6.6	8.4
4 h after dark	6.25	3.3	9.2
8 h after dark	16.75	5.3	28.2
12 h after dark	25.05	10.5	39.6