condition	mean	min	max
4 h after light	11.9	11.9	11.9
8 h after light	17.8	8.5	27.1
12 h after light	8.95	8.6	9.3
4 h after dark	4.15	2.4	5.9
8 h after dark	9.55	6.7	12.4
12 h after dark	9.05	7.3	10.8