{"coeffs": [-7.054272249304612e-07, -8.004650678767456e-09, -0.16029585257382953, 0.06013714066779026], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.9399213777948026e-08, 2.9788371430868562e-08, 0.018272165053658175, 0.01621991888794338], "covariance": [[1.5522980463204496e-15, -1.9349475151997113e-16, 3.5043597622800793e-10, -3.4329027845283545e-10], [-1.9349475151997117e-16, 8.873470725033863e-16, 1.7959703328165468e-10, 2.153822800189237e-10], [3.50435976228008e-10, 1.795970332816547e-10, 0.00033387201574812706, -3.2839667001238647e-05], [-3.432902784528355e-10, 2.153822800189237e-10, -3.283966700123865e-05, 0.00026308576873146236]]}