condition mean min max 2 h after light 4.236741666666667 2.54989 5.62294 6 h after light 3.90404 2.88757 6.01102 10 h after light 2.83179 1.89073 3.57975 14 h after light 3.393168333333333 1.782 4.97066 18 h after light 4.039615 2.81466 5.00845 2 h after dark 3.009618333333333 2.29062 3.75467