condition	mean	min	max
4 h after light	6.655756666666667	6.41483	6.79635
8 h after light	6.98031	6.5988	7.435630000000001
12 h after light	7.22548	7.02181	7.40919
4 h after dark	7.06078	6.91317	7.21029
8 h after dark	6.7184566666666665	6.484	7.06221
12 h after dark	6.613236666666667	6.3471400000000004	7.07057