condition	mean	min	max
4 h after light	8.493076666666667	8.37923	8.56823
8 h after light	7.95965	7.78355	8.23344
12 h after light	8.125096666666666	8.04915	8.23218
4 h after dark	8.34894	8.21901	8.55225
8 h after dark	8.64529	8.53032	8.86082
12 h after dark	8.652196666666667	8.546489999999999	8.770010000000001