condition mean min max 4 h after light 1.008565 0.759281 1.29089 8 h after light 1.023137 0.22539 1.89735 12 h after light 1.130645 0.656265 1.61657 4 h after dark 3.35938 2.3966 3.94712 8 h after dark 3.382813333333333 2.22281 4.21069 12 h after dark 10.97794 8.43058 15.3143