{"coeffs": [-8.457139151252441e-07, -1.516852759719371e-08, -0.20468738955914473, 0.08567124657868758], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.36411964939705e-08, 1.885000829459115e-08, 0.012717020272545508, 0.011596915371316406], "covariance": [[1.1317301015459334e-15, -1.9238046125716056e-16, 2.8129418208407393e-10, -2.780549603608419e-10], [-1.9238046125716054e-16, 3.553228127061551e-16, 5.154370097373918e-11, 1.2382351563945594e-10], [2.8129418208407393e-10, 5.1543700973739195e-11, 0.00016172260461233342, -4.568720076021731e-05], [-2.780549603608419e-10, 1.2382351563945594e-10, -4.568720076021731e-05, 0.00013448844612947474]]}