condition mean min max 0 h after light 0.421681 0.0 0.843362 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.89425 0.0 1.7885 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.440578 0.0 0.881156 12 h after dark 0.0 0.0 0.0