condition	mean	min	max
4 h after light	8.873156666666667	8.82896	8.91736
8 h after light	8.76434	8.64352	8.85401
12 h after light	8.317653333333334	8.26905	8.3681
4 h after dark	8.276733333333333	8.049339999999999	8.57691
8 h after dark	8.690100000000001	8.50141	8.903080000000001
12 h after dark	9.21934	8.89976	9.58271