{"coeffs": [-5.829772038182092e-07, -1.2313961913482516e-08, -0.29750096913261703, 0.04138794470769417], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [9.84709792476341e-08, 4.4971672005937346e-08, 0.03584898134911681, 0.03084586921190442], "covariance": [[9.696533753987985e-15, -4.957116334490865e-16, 1.9932350356337212e-09, -1.6727894137079068e-09], [-4.957116334490866e-16, 2.0224512830096086e-15, 3.326087064495932e-10, 4.2250972486448304e-10], [1.9932350356337212e-09, 3.3260870644959326e-10, 0.0012851494637693246, -0.00027035769306403405], [-1.672789413707907e-09, 4.2250972486448304e-10, -0.00027035769306403405, 0.000951467647437913]]}