condition mean min max 3 h after light 0.414171 0.286817 0.600401 6 h after light 0.6005076666666667 0.472412 0.792096 9 h after light 0.7128446666666667 0.589899 0.878618 12 h after light 1.9098499999999998 1.67618 2.04635 3 h after dark 2.33545 2.02571 2.82982 6 h after dark 2.0796533333333334 1.64288 2.50349 9 h after dark 1.451111 0.834123 1.92587 12 h after dark 1.21372 1.02575 1.39972