condition mean min max 0 h after light 0.0687265 0.0 0.137453 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0338436 0.0 0.0676872 12 h after dark 0.03356965 0.0 0.0671393