{"coeffs": [-2.878263657373616e-07, -1.9528835246548884e-08, -0.29896610738825985, 0.010867379023219374], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.715566357077097e-08, 2.090561071302918e-08, 0.01894655559294606, 0.023158003829804843], "covariance": [[1.3805433353843166e-15, -2.4273738427190506e-17, 2.7118499279172514e-10, -3.1851790788835317e-10], [-2.427373842719048e-17, 4.3704455928472036e-16, 2.6336189836407263e-11, 5.0856065942891305e-11], [2.711849927917252e-10, 2.633618983640725e-11, 0.0003589719688365956, -0.0002729405327455894], [-3.1851790788835317e-10, 5.085606594289131e-11, -0.00027294053274558934, 0.0005362931413812557]]}