{"coeffs": [-7.270897592108883e-07, -5.014001156791834e-08, -0.3008170925135688, 0.028970352683967304], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.714671425999687e-08, 4.064987385489062e-08, 0.02154417090517899, 0.018671975972966524], "covariance": [[5.9516155211136045e-15, -2.0704349445708985e-16, 7.369425163681622e-10, -6.135553716360475e-10], [-2.0704349445708995e-16, 1.6524122444185197e-15, 1.856026147835701e-10, 1.857504373042236e-10], [7.369425163681622e-10, 1.8560261478357013e-10, 0.00046415129999156083, -5.471887834644049e-05], [-6.135553716360474e-10, 1.8575043730422358e-10, -5.47188783464405e-05, 0.0003486426867350392]]}