{"coeffs": [-9.244735845340543e-08, -3.223925511490155e-09, -0.3812041880482102, 0.02402300434763283], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.2355081682203343e-08, 8.379866665239095e-09, 0.03425780663190017, 0.02989627194853876], "covariance": [[4.9974967701798345e-16, -1.2483409799058559e-17, 3.916837943380494e-10, -3.244191650984508e-10], [-1.2483409799058559e-17, 7.022216532718539e-17, 4.6384970057327454e-11, 5.2666080540527236e-11], [3.916837943380494e-10, 4.6384970057327454e-11, 0.0011735973152286637, -0.00021909140069449772], [-3.244191650984508e-10, 5.266608054052722e-11, -0.00021909140069449772, 0.0008937870764209855]]}