{"coeffs": [-2.199652950087963e-09, 8.499010618658843e-07, 0.3805778587334615, 0.08531643939589066], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.4098806685257063e-08, 1.8687704950219517e-07, 0.03702874961980854, 0.02277896766609007], "covariance": [[1.1627286173585317e-15, -4.7880031281095366e-15, -8.110605588341439e-10, -6.864411789790633e-10], [-4.78800312810954e-15, 3.492303163064591e-14, 6.800460968351318e-09, 4.017743612512298e-09], [-8.110605588341446e-10, 6.800460968351318e-09, 0.0013711282984064709, 0.0007553213295592411], [-6.864411789790636e-10, 4.017743612512296e-09, 0.0007553213295592408, 0.0005188813679327768]]}