condition	mean	min	max
4 h after light	6.598870000000001	6.14326	7.456360000000001
8 h after light	5.945623333333333	5.5770599999999995	6.33573
12 h after light	7.139473333333333	6.28102	8.27843
4 h after dark	5.71582	5.62407	5.8516
8 h after dark	5.659926666666667	5.63698	5.69655
12 h after dark	5.62398	5.54905	5.69745