condition mean min max 2 h after light 2.724483333333333 0.0 6.29755 6 h after light 0.8476516666666667 0.0 5.08591 10 h after light 0.697815 0.0 4.18689 14 h after light 3.107955 0.0 8.75068 18 h after light 0.61472 0.0 3.68832 2 h after dark 1.82544 0.0 5.53001