{"coeffs": [-1.9306980961743613e-07, 3.713732559676531e-09, -0.2459686246112845, 0.015882163945934034], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.5350299236841173e-08, 1.7147383318410366e-08, 0.020930495468819494, 0.01997579760869259], "covariance": [[6.426376713973901e-16, -1.4571586882412066e-17, 1.321684962516486e-10, -1.2116792413013955e-10], [-1.457158688241206e-17, 2.9403275466849813e-16, 7.47649966027698e-11, 7.278857028112809e-11], [1.321684962516486e-10, 7.47649966027698e-11, 0.00043808564057027337, 4.989597501668657e-05], [-1.2116792413013955e-10, 7.278857028112806e-11, 4.989597501668657e-05, 0.0003990324901034486]]}