{"coeffs": [-1.1183553847444401e-07, 3.5929771503165806e-10, -0.3571147065297627, 0.008410208603689504], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.589915297473445e-09, 2.2174124520753354e-09, 0.006843879644799113, 0.003247594071577336], "covariance": [[2.1067322437980743e-17, -3.3425167728512904e-20, 7.683158269798588e-12, -2.385629178070706e-12], [-3.342516772851305e-20, 4.916917982618752e-18, 3.049175224420999e-12, 1.4183208861985982e-12], [7.683158269798584e-12, 3.049175224420999e-12, 4.683868859249563e-05, 1.1133645327921825e-05], [-2.385629178070707e-12, 1.4183208861985978e-12, 1.1133645327921822e-05, 1.0546867253744258e-05]]}