condition mean min max 4 h after light 0.5038785 0.349392 0.658365 8 h after light 1.41792 1.17664 1.6592 12 h after light 0.9453944999999999 0.887239 1.00355 4 h after dark 1.7712933333333332 1.36597 2.58167 8 h after dark 1.7214066666666668 1.61866 1.89106 12 h after dark 1.2165863333333333 0.701769 1.6974