condition mean min max 4 h after light 0.551304 0.369618 0.73299 8 h after light 0.650632 0.584133 0.717131 12 h after light 0.4332545 0.283891 0.582618 4 h after dark 0.4133615 0.400627 0.426096 8 h after dark 0.3161755 0.291649 0.340702 12 h after dark 0.451153 0.410182 0.492124