condition mean min max 4 h after light 12.1990645 11.44044 12.957689 8 h after light 9.934528 9.918354 9.950702 12 h after light 10.507027 10.312043 10.702011 4 h after dark 10.127036499999999 9.561741 10.692332 8 h after dark 9.409875499999998 8.507708 10.312043 12 h after dark 10.312043 10.312043 10.312043