condition mean min max 4 h after light 6.516373333333333 2.31803 8.92975 8 h after light 3.20471 0.77051 5.54842 12 h after light 3.736956666666667 1.9797 6.00851 4 h after dark 7.611433333333333 5.77184 9.17656 8 h after dark 7.44926 5.19787 8.89324 12 h after dark 5.93162 4.10684 7.17016