{"coeffs": [-5.045319281981559e-07, -8.981851688822952e-09, -0.33072425805613836, 0.06187455495172127], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.7607187443591234e-08, 7.70450536186794e-09, 0.011564225804106312, 0.009127434105258018], "covariance": [[7.621567985455815e-16, -4.613585979956404e-17, 2.5541920467174703e-10, -1.8785842574276988e-10], [-4.6135859799564054e-17, 5.935940287105183e-17, 5.61801989152227e-12, 2.8159752474490004e-11], [2.5541920467174703e-10, 5.6180198915222775e-12, 0.00013373131844835828, -5.6966727135638766e-05], [-1.8785842574276988e-10, 2.815975247449e-11, -5.696672713563877e-05, 8.331005334582724e-05]]}