condition	mean	min	max
4 h after light	7.283196666666667	7.15232	7.534160000000001
8 h after light	7.427373333333334	7.31451	7.648110000000001
12 h after light	7.171193333333334	6.54971	7.57631
4 h after dark	7.10245	6.747039999999999	7.411910000000001
8 h after dark	7.063093333333334	6.763560000000001	7.51911
12 h after dark	7.1637	6.834910000000001	7.47392