condition mean min max 4 h after light 1.099974 0.796028 1.40392 8 h after light 0.831815 0.58034 1.08329 12 h after light 1.925115 1.66721 2.18302 4 h after dark 3.5982250000000002 1.87699 5.31946 8 h after dark 2.5978250000000003 2.24017 2.95548 12 h after dark 2.176745 1.71157 2.64192