{"coeffs": [-2.1904678601432635e-07, -3.3199638474611703e-09, -0.32517227408051114, 0.015614138956929096], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.8773665768874556e-08, 1.0095856607761808e-08, 0.012749444102631858, 0.0095793958785495], "covariance": [[3.5245052640141233e-16, -4.169494292866688e-18, 7.60961202987654e-11, -4.737549380823697e-11], [-4.16949429286669e-18, 1.0192632064448776e-16, 2.448950623732419e-11, 1.7220790078091175e-11], [7.609612029876538e-11, 2.448950623732419e-11, 0.00016254832492613427, 5.3282226345680675e-06], [-4.737549380823698e-11, 1.7220790078091172e-11, 5.328222634568067e-06, 9.176482539797113e-05]]}