{"coeffs": [-1.3051079677280705e-07, -9.238579276127001e-10, -0.31197266051764305, 0.020911946469930432], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.5051673159585004e-08, 8.057768276116635e-09, 0.018917310514709858, 0.016265916559637238], "covariance": [[2.2655286490297157e-16, -5.1616342810791146e-18, 1.10137052825355e-10, -8.882270007881358e-11], [-5.161634281079113e-18, 6.492762959159163e-17, 2.8267229704193386e-11, 2.5359957189673227e-11], [1.10137052825355e-10, 2.8267229704193386e-11, 0.00035786463710995214, -3.980331835441758e-05], [-8.882270007881358e-11, 2.5359957189673227e-11, -3.980331835441758e-05, 0.00026458004152508095]]}