condition	mean	min	max
4 h after light	7.73671	7.381660000000001	8.0481
8 h after light	6.18516	5.96629	6.43438
12 h after light	6.704973333333333	6.41576	6.85819
4 h after dark	6.78859	6.67097	6.8573
8 h after dark	7.296913333333333	7.24713	7.32755
12 h after dark	7.774296666666667	7.69068	7.85973