condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.136691 0.0 0.410073 9 h after light 0.097779 0.0 0.293337 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0