condition	mean	min	max
4 h after light	9.06328	8.86042	9.18641
8 h after light	8.860543333333334	8.82041	8.912139999999999
12 h after light	8.802553333333334	8.792060000000001	8.82044
4 h after dark	8.938956666666668	8.831560000000001	9.03081
8 h after dark	8.721953333333333	8.58125	8.84728
12 h after dark	8.806949999999999	8.32063	9.28812