{"coeffs": [-6.988222892535406e-07, -1.9204104715808765e-08, -0.1377477716276035, 0.07324840912729755], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.277629773352585e-08, 4.258954457554951e-08, 0.027607458745223593, 0.025215600421921495], "covariance": [[2.7853376024577652e-15, -5.129186413510062e-16, 7.292486349039957e-10, -7.942282016614382e-10], [-5.129186413510062e-16, 1.8138693071527187e-15, 4.2047433013974545e-10, 5.709048323846953e-10], [7.292486349039957e-10, 4.2047433013974545e-10, 0.0007621717783692227, -7.100946959682772e-05], [-7.942282016614382e-10, 5.709048323846953e-10, -7.100946959682773e-05, 0.0006358265046380074]]}