{"coeffs": [-5.360345528027103e-07, -3.6091521915947335e-08, -0.30331374327227717, 0.023523847948405754], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.355768407993415e-08, 2.2973437854642513e-08, 0.014864889044750893, 0.012855096049978138], "covariance": [[1.8972718424073493e-15, -5.0437179220482815e-17, 2.6350284913544214e-10, -2.1556108099010035e-10], [-5.0437179220482815e-17, 5.277788468611216e-16, 6.666353703957905e-11, 6.252835758252635e-11], [2.6350284913544214e-10, 6.666353703957907e-11, 0.0002209649263127551, -2.384788435887734e-05], [-2.1556108099010038e-10, 6.252835758252635e-11, -2.3847884358877352e-05, 0.0001652534944541635]]}