condition mean min max 4 h after light 0.83737 0.64881 1.02593 8 h after light 0.815072 0.771173 0.858971 12 h after light 1.6686 1.62154 1.71566 4 h after dark 3.5998 3.49189 3.80944 8 h after dark 2.76572 1.94695 3.75068 12 h after dark 0.8904446666666667 0.710817 1.20987