condition	mean	min	max
4 h after light	6.944933333333333	6.7959	7.088760000000001
8 h after light	6.940846666666666	6.81124	7.18526
12 h after light	7.06317	6.84245	7.307930000000001
4 h after dark	7.05454	6.72881	7.461310000000001
8 h after dark	6.970593333333333	6.649260000000001	7.27603
12 h after dark	7.052233333333334	6.7838899999999995	7.26438