{"coeffs": [-1.844894986353399e-07, -1.3653105347069508e-10, -0.3543459736085837, 0.015206577378001301], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.500969285658791e-08, 2.091966356459241e-08, 0.032418927704778056, 0.02292326441475359], "covariance": [[2.0258724510443807e-15, -1.9095249452264726e-17, 5.342673583529497e-10, -3.140052187058468e-10], [-1.9095249452264714e-17, 4.376323236557352e-16, 1.1737990166848263e-10, 7.603908361571022e-11], [5.342673583529498e-10, 1.1737990166848263e-10, 0.001050986873527626, -3.526889370667727e-05], [-3.140052187058468e-10, 7.603908361571022e-11, -3.526889370667725e-05, 0.0005254760514287084]]}