condition mean min max 2 h after light 3.223885 2.07348 4.26676 6 h after light 1.7279201666666666 0.978241 2.72047 10 h after light 2.235345 1.80774 2.69439 14 h after light 2.409265 1.55774 4.00458 18 h after light 2.1982383333333333 1.24824 2.88551 2 h after dark 1.5416533333333333 1.09734 2.08601