{"coeffs": [-4.354080813639197e-07, -1.459319281216929e-08, -0.30605209658790244, 0.017082868167229894], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.377555544528089e-08, 1.837116825166206e-08, 0.01220801923054091, 0.009945744538187664], "covariance": [[1.1407881456372435e-15, -1.8154571387351367e-17, 1.5077721963736169e-10, -1.1259023827053388e-10], [-1.8154571387351367e-17, 3.374998229308759e-16, 3.7366110901774674e-11, 2.8935856469142778e-11], [1.507772196373617e-10, 3.7366110901774674e-11, 0.00014903573353325668, -2.1509695122614844e-05], [-1.1259023827053386e-10, 2.8935856469142778e-11, -2.1509695122614837e-05, 9.891783441888975e-05]]}