condition	mean	min	max
4 h after light	4.5	4.5	4.5
8 h after light	4.0	1.9	6.1
12 h after light	11.75	8.3	15.2
4 h after dark	9.9	7.7	12.1
8 h after dark	32.05	22.9	41.2
12 h after dark	19.799999999999997	17.9	21.7