{"coeffs": [-6.430011439337645e-07, -1.976944392362415e-08, -0.08375253672374068, 0.040431459180546754], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [8.109161305168666e-08, 8.348549169094929e-08, 0.04215011509476089, 0.03674018674128071], "covariance": [[6.575849707324479e-15, -5.816095095715545e-16, 1.1661210970859265e-09, -1.0799272036222547e-09], [-5.816095095715543e-16, 6.969827322879563e-15, 1.2429694664398482e-09, 1.139205715015281e-09], [1.1661210970859265e-09, 1.2429694664398482e-09, 0.0017766322025015895, 1.180644867744995e-05], [-1.0799272036222547e-09, 1.1392057150152808e-09, 1.1806448677449913e-05, 0.0013498413217841792]]}