{"coeffs": [-1.539051929242106e-07, 1.2706244141137198e-09, -0.28727136605280124, 0.010803165858686842], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.5946272811280653e-08, 2.8814259999446033e-08, 0.04864761751605663, 0.03200674572685143], "covariance": [[2.111059985248628e-15, -1.275233320165153e-17, 4.6405606174143674e-10, -2.063674219640827e-10], [-1.275233320165153e-17, 8.302615793156757e-16, 3.046029863056239e-10, 1.905440362229699e-10], [4.6405606174143674e-10, 3.046029863056239e-10, 0.0023665906899885403, 0.0006943378726556604], [-2.0636742196408266e-10, 1.905440362229699e-10, 0.0006943378726556604, 0.0010244317720233221]]}