condition mean min max 0 h after light 5.799 0.0 11.598 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 2.85383 0.0 5.70766 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0