condition mean min max 3 h after light 2.12386 1.28457 3.49574 6 h after light 2.54249 2.30493 2.75054 9 h after light 1.9165 1.2108 3.03829 12 h after light 2.52689 1.98718 3.53135 3 h after dark 4.9146366666666665 2.40823 7.79938 6 h after dark 4.994223333333333 3.03726 7.00779 9 h after dark 18.458736666666667 2.84248 49.3583 12 h after dark 1.9271836666666666 0.952831 2.53169