{"coeffs": [-6.221582295945166e-07, -6.305225321742622e-08, -0.19739422980508597, 0.05183438323180128], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.454207789328185e-08, 2.981422557914599e-08, 0.02279657237731061, 0.019979265952435574], "covariance": [[1.983996703051188e-15, -1.7723007554164633e-16, 5.01473566598957e-10, -4.592093964282733e-10], [-1.7723007554164628e-16, 8.888880468842032e-16, 1.9794198766879453e-10, 2.2914651669998762e-10], [5.014735665989569e-10, 1.979419876687945e-10, 0.0005196837121539612, -6.386426612598661e-05], [-4.592093964282732e-10, 2.2914651669998767e-10, -6.386426612598659e-05, 0.00039917106799815136]]}