condition	mean	min	max
4 h after light	7.72863	7.51165	7.84289
8 h after light	7.87982	7.72832	8.1619
12 h after light	7.7375066666666665	7.54197	8.06512
4 h after dark	7.797916666666667	7.587560000000001	8.15435
8 h after dark	7.54658	7.300160000000001	7.929689999999999
12 h after dark	6.9309	6.79131	7.10963