{"coeffs": [-5.485130846552512e-07, -1.842000922146042e-08, -0.19537096058589834, 0.050574278109427696], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.3107214432983955e-08, 3.607088033736284e-08, 0.028610015337764843, 0.02504108730614086], "covariance": [[2.8203762248309394e-15, -2.451670914262899e-16, 7.360383538042273e-10, -6.718519084018967e-10], [-2.4516709142628983e-16, 1.301108408312349e-15, 3.0236145667229615e-10, 3.422048818732123e-10], [7.360383538042273e-10, 3.0236145667229615e-10, 0.0008185329776271395, -9.417270745763092e-05], [-6.718519084018967e-10, 3.422048818732123e-10, -9.417270745763095e-05, 0.0006270560534737689]]}