{"coeffs": [-1.7792959755240066e-07, -1.905283067253784e-08, -0.18943469709900182, 0.033875760221069674], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.440727453584203e-08, 5.53491833945495e-08, 0.11794116055075496, 0.10241304777155907], "covariance": [[5.5364425038521656e-15, -2.8743301881695005e-16, 3.358163266760692e-09, -2.8870899750307974e-09], [-2.8743301881694995e-16, 3.063532102443474e-15, 1.777872274555886e-09, 1.6630383686955668e-09], [3.3581632667606923e-09, 1.777872274555886e-09, 0.013910117352058956, -0.000774056929087613], [-2.8870899750307974e-09, 1.6630383686955666e-09, -0.000774056929087613, 0.01048843235385964]]}