condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.3975315 0.0 0.795063 4 h after dark 0.3961905 0.0 0.792381 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0