{"coeffs": [-5.606513075256924e-07, -2.025954549802189e-08, -0.23736174717988012, 0.03773500032097607], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [6.532550304210835e-08, 4.0321058976783326e-08, 0.028670337575417128, 0.02487407234529566], "covariance": [[4.267421347704507e-15, -2.273556291040826e-16, 8.461616148168092e-10, -7.272131612871247e-10], [-2.2735562910408274e-16, 1.6257877970092395e-15, 2.928973330062302e-10, 3.0072866825113445e-10], [8.461616148168092e-10, 2.928973330062302e-10, 0.0008219882566883753, -8.951712654502857e-05], [-7.272131612871247e-10, 3.0072866825113445e-10, -8.951712654502858e-05, 0.0006187194750390024]]}