{"coeffs": [-3.4655068676793854e-07, -1.4448824997098204e-08, -0.31983134649468864, 0.021774488758837217], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.045074642655517e-08, 1.579075405005794e-08, 0.014978079655219306, 0.012543251561118835], "covariance": [[9.272479579343624e-16, -2.063185448090975e-17, 1.8083322215257013e-10, -1.396144801501948e-10], [-2.0631854480909742e-17, 2.4934791346942124e-16, 4.540379365428387e-11, 3.956148421673425e-11], [1.8083322215257013e-10, 4.540379365428386e-11, 0.0002243428701580945, -2.0443286322164692e-05], [-1.396144801501948e-10, 3.956148421673425e-11, -2.044328632216469e-05, 0.0001573331597255101]]}