condition mean min max 2 h after light 2.76288 1.79311 4.06412 6 h after light 3.0735433333333333 1.744 4.96734 10 h after light 1.9733749999999999 1.28926 2.24106 14 h after light 2.958075 2.32966 3.7549 18 h after light 2.6180166666666667 1.94882 3.14807 2 h after dark 2.244335 1.83512 3.07606