condition	mean	min	max
4 h after light	8.16993	7.52941	8.81045
8 h after light	9.29195	8.74742	9.83648
12 h after light	9.09006	8.75659	9.42353
4 h after dark	15.3629	14.1645	16.5613
8 h after dark	12.1512	11.9193	12.3831
12 h after dark	12.405899999999999	11.5996	13.2122