condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.15697833333333333 0.0 0.309153 9 h after light 0.09949766666666666 0.0 0.298493 12 h after light 0.287186 0.0 0.685789 3 h after dark 2.8149100000000002 1.32411 4.2831 6 h after dark 2.5146966666666666 1.79763 3.5811 9 h after dark 2.08968 1.46722 3.2732 12 h after dark 0.645654 0.561994 0.729314