{"coeffs": [-3.245978164581879e-07, 6.295273740201408e-10, -0.2975944038237737, 0.02282537902967878], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.676601047063216e-08, 1.9925757284198703e-08, 0.019247127243317532, 0.016969089941627925], "covariance": [[1.3517395259266337e-15, -3.658691512725713e-17, 2.7791698069536183e-10, -2.3383313428069533e-10], [-3.658691512725713e-17, 3.9703580334879763e-16, 7.467262355006679e-11, 7.14916013065351e-11], [2.7791698069536183e-10, 7.467262355006678e-11, 0.000370451907120456, -3.753645980426387e-05], [-2.338331342806954e-10, 7.149160130653508e-11, -3.753645980426387e-05, 0.000287950013447058]]}