condition	mean	min	max
4 h after light	6.5898	4.16801	9.01159
8 h after light	4.71932	4.01326	5.42538
12 h after light	5.490705	5.12389	5.85752
4 h after dark	4.841406666666667	3.85814	5.92594
8 h after dark	6.497843333333333	5.93125	6.98471
12 h after dark	6.44168	5.88912	6.93745