{"coeffs": [-2.4560741242919924e-06, -5.5884811472219806e-08, -0.38693866018134165, 0.15290688188400914], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [8.885930641323099e-07, 3.310152198826496e-08, 0.1087803637803312, 0.033074451186652296], "covariance": [[7.895976336240474e-13, -1.836365229826206e-14, 9.63634993838298e-08, -2.7563543273110962e-08], [-1.8363652298261905e-14, 1.0957107579395889e-15, -2.211313151090511e-09, 8.454753596997545e-10], [9.636349938382983e-08, -2.2113131510905335e-09, 0.011833167544181192, -0.003401375799013137], [-2.7563543273110925e-08, 8.454753596997575e-10, -0.0034013757990131316, 0.0010939193212982457]]}