condition	mean	min	max
4 h after light	6.158126666666667	5.78984	6.39703
8 h after light	6.23572	5.89738	6.40775
12 h after light	6.22251	5.76222	6.46965
4 h after dark	6.495853333333334	6.15263	6.924060000000001
8 h after dark	6.57219	6.0137	7.12645
12 h after dark	6.6747700000000005	6.44448	6.82406