{"coeffs": [-1.4448539940816848e-06, -1.2092212311332263e-08, -0.36942770305702677, 0.12426665362154832], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.4113355412044996e-07, 3.175167791128811e-08, 0.04761660594972723, 0.026098009632078093], "covariance": [[5.814539092275997e-14, -3.935771897035436e-15, 1.1183435463801665e-08, -5.656856960752527e-09], [-3.935771897035438e-15, 1.0081690501821815e-15, -5.908373363800273e-10, 5.733371343347952e-10], [1.1183435463801665e-08, -5.908373363800271e-10, 0.002267341162171598, -0.0010610078189868942], [-5.656856960752528e-09, 5.733371343347952e-10, -0.0010610078189868942, 0.0006811061067560409]]}