{"coeffs": [-5.020841983004665e-07, 1.1392959224868687e-09, -0.3421352675766869, 0.041223662717059385], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.97040930511419e-08, 2.0832737956610507e-08, 0.021231782462422508, 0.01788077553778556], "covariance": [[3.564578727059411e-15, -1.5649232260944102e-16, 8.277242126779625e-10, -6.625200508665775e-10], [-1.5649232260944095e-16, 4.340029707688002e-16, 6.86008867611162e-11, 1.106577721360222e-10], [8.277242126779625e-10, 6.860088676111617e-11, 0.000450788586531632, -0.0001338403187265825], [-6.625200508665774e-10, 1.106577721360222e-10, -0.0001338403187265825, 0.0003197221338326705]]}