condition	mean	min	max
4 h after light	79.6	79.6	79.6
8 h after light	75.85	63.1	88.6
12 h after light	86.25	81.6	90.9
4 h after dark	74.55	61.9	87.2
8 h after dark	61.0	49.7	72.3
12 h after dark	53.05	34.9	71.2