{"coeffs": [-3.5622827258854225e-07, -1.5715163568539338e-08, -0.2706186152937977, 0.03614362856816626], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.0712572030929747e-08, 1.731664877345466e-08, 0.019846937260861505, 0.017184121244488374], "covariance": [[9.432620807550482e-16, -4.501699340295964e-17, 2.857881239470647e-10, -2.426041819486991e-10], [-4.5016993402959634e-17, 2.9986632474318875e-16, 8.118950101215684e-11, 8.508868273753268e-11], [2.857881239470647e-10, 8.118950101215682e-11, 0.0003939009186365727, -4.997992658389457e-05], [-2.426041819486991e-10, 8.508868273753268e-11, -4.997992658389454e-05, 0.00029529402294527663]]}