condition	mean	min	max
4 h after light	6.4	6.4	6.4
8 h after light	7.75	3.8	11.7
12 h after light	6.45	6.0	6.9
4 h after dark	14.75	7.4	22.1
8 h after dark	14.55	14.3	14.8
12 h after dark	16.049999999999997	12.7	19.4