condition mean min max 4 h after light 5.344585 3.94208 6.74709 8 h after light 4.453284999999999 3.98818 4.91839 12 h after light 3.054875 2.37556 3.73419 4 h after dark 3.8021566666666664 3.18535 4.80892 8 h after dark 4.53616 4.31301 4.76888 12 h after dark 5.350016666666667 5.09602 5.49282