condition mean min max 0 h after light 3.24172 3.1323 3.35114 4 h after light 2.58073 2.24875 2.91271 8 h after light 2.745195 2.66224 2.82815 4 h after dark 3.3075799999999997 2.92698 3.68818 8 h after dark 3.412535 3.14113 3.68394 12 h after dark 2.825655 2.61433 3.03698