{"coeffs": [-2.871440718941239e-07, -1.5560884392197545e-08, -0.2405776451022846, 0.043431281352126073], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.983141068856026e-08, 1.8092488192767868e-08, 0.02752989290543275, 0.023921808840302476], "covariance": [[8.899130636695472e-16, -5.719217695867411e-17, 3.992107612058604e-10, -3.489528005613693e-10], [-5.719217695867413e-17, 3.273381290054447e-16, 1.2966148290889064e-10, 1.427930265422798e-10], [3.992107612058604e-10, 1.2966148290889064e-10, 0.0007578950033845965, -9.889075043123088e-05], [-3.489528005613693e-10, 1.427930265422798e-10, -9.889075043123088e-05, 0.0005722529381919736]]}