{"coeffs": [-1.8471681506609035e-06, 1.771032256642634e-05, 0.7823757154315335, 0.18938545101167253], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.632119616357908e-07, 1.4856899384579557e-06, 0.022453446826129545, 0.015648526163687244], "covariance": [[1.3192292907531918e-13, -5.09560013353113e-13, -7.4036309886321754e-09, -5.590733066275131e-09], [-5.095600133531206e-13, 2.2072745932352042e-12, 3.3192765830225914e-08, 2.292721731218916e-08], [-7.403630988632324e-09, 3.3192765830226066e-08, 0.000504157274373827, 0.00033964946190037507], [-5.590733066275172e-09, 2.292721731218901e-08, 0.0003396494619003712, 0.00024487637109560416]]}