condition mean min max 4 h after light 2.06635 1.80473 2.32797 8 h after light 2.4339399999999998 2.28468 2.5832 12 h after light 2.869945 2.76357 2.97632 4 h after dark 3.246105 2.85018 3.64203 8 h after dark 2.947825 2.58436 3.31129 12 h after dark 2.1398099999999998 1.8154 2.46422