{"coeffs": [-1.3270175491785456e-07, -4.117301653999183e-09, -0.2937805481688578, 0.005287497024053794], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.732831360449955e-08, 2.3589471413045166e-08, 0.3543052636498843, 0.27063321075117186], "covariance": [[1.3934029965558658e-15, -6.910563524794204e-18, -1.8402189996848575e-10, -3.4694714015438546e-10], [-6.910563524794094e-18, 5.564631615468752e-16, 2.1024811565645346e-09, 1.5874468735086326e-09], [-1.8402189996847758e-10, 2.1024811565645354e-09, 0.125532219850014, 0.09567392469688686], [-3.46947140154376e-10, 1.587446873508633e-09, 0.09567392469688686, 0.0732423347614882]]}