{"coeffs": [-4.637286657121136e-07, -2.235613571900819e-08, -0.28803640195912594, 0.024310434557708118], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.513025404598958e-08, 3.1669417170769936e-08, 0.022901356522317163, 0.01971399202034297], "covariance": [[3.0393449111753504e-15, -8.652253004503244e-17, 4.853602691335062e-10, -3.937888654961139e-10], [-8.652253004503248e-17, 1.0029519839362576e-15, 1.5305973607650587e-10, 1.397360938406699e-10], [4.853602691335061e-10, 1.5305973607650587e-10, 0.0005244721305622789, -3.802389156236253e-05], [-3.9378886549611393e-10, 1.3973609384066987e-10, -3.8023891562362544e-05, 0.0003886414813781463]]}