condition mean min max 3 h after light 0.9676153333333333 0.0 2.08418 6 h after light 0.45925 0.0 1.37775 9 h after light 0.9327 0.0 1.46786 12 h after light 0.52652725 0.0 0.764057 3 h after dark 0.8430266666666667 0.0 2.52908 6 h after dark 1.484803 0.728289 2.51987 9 h after dark 1.2384763333333333 0.767739 1.85791 12 h after dark 1.067462 0.834844 1.30008