condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.4547885 0.0 0.909577 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.36901 0.0 0.73802