{"coeffs": [-1.2312298785345456e-07, 1.7269434994509543e-06, 0.8080627017657623, 0.21458520687599936], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.0928600654700297e-08, 1.1612448006610704e-07, 0.019841558769625844, 0.02181400240743536], "covariance": [[2.5937223646459393e-15, -5.1067101377314795e-15, -6.336540128668014e-10, -1.0610184674015527e-09], [-5.106710137731453e-15, 1.348489487062369e-14, 2.145309366270631e-09, 2.4401820245802157e-09], [-6.336540128667943e-10, 2.1453093662706237e-09, 0.0003936874544085163, 0.00035236413286110854], [-1.06101846740155e-09, 2.440182024580221e-09, 0.0003523641328611108, 0.0004758507010315956]]}