condition mean min max 2 h after light 2.2686013333333332 0.522671 7.39647 6 h after light 1.7115420000000001 0.332205 5.77946 10 h after light 3.4145190000000003 0.625214 12.8955 14 h after light 3.0603468333333335 0.484311 6.718 18 h after light 0.9967851666666667 0.168575 3.45712 2 h after dark 1.2532335 0.361315 2.47275