{"coeffs": [-2.2259843439392647e-07, 2.1672290633373235e-05, 0.5693737698556137, 0.10513139761478682], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.1433921479600566e-07, 1.1826261906967899e-06, 0.012309939321052881, 0.005807432730175874], "covariance": [[1.3073456040167118e-14, -7.659397444529929e-14, -6.875698649997106e-10, -4.845605296200884e-10], [-7.659397444529924e-14, 1.3986047069220002e-12, 1.4368640213848609e-08, 6.3087544134806194e-09], [-6.875698649997106e-10, 1.4368640213848607e-08, 0.00015153460608800388, 6.413267380035122e-05], [-4.845605296200883e-10, 6.3087544134806194e-09, 6.413267380035122e-05, 3.372627491551801e-05]]}