condition	mean	min	max
4 h after light	17.0621985	15.7705	18.353897
8 h after light	15.8596495	15.269708	16.449591
12 h after light	14.293524000000001	13.242157	15.344891
4 h after dark	19.203758999999998	16.791376	21.616142
8 h after dark	16.785691	15.26137	18.310012
12 h after dark	27.454745	27.454745	27.454745