condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.016140425 0.0 0.0645617 3 h after dark 0.0 0.0 0.0 6 h after dark 0.022790033333333334 0.0 0.0683701 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0