{"coeffs": [-1.4234406195753883e-07, -6.536600758847464e-09, -0.09280198862524555, 0.03990710723300844], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.819140364760858e-08, 4.9409763277035444e-08, 0.1140913938848952, 0.09942060062273282], "covariance": [[2.3224113855267413e-15, -2.0083869153628316e-16, 1.8696143056404485e-09, -1.72482172826712e-09], [-2.0083869153628316e-16, 2.4413247070926803e-15, 1.9749654566750523e-09, 1.8064269599836374e-09], [1.8696143056404485e-09, 1.974965456675052e-09, 0.013016846158598301, 7.400850538809513e-05], [-1.72482172826712e-09, 1.8064269599836374e-09, 7.400850538809513e-05, 0.009884455828184941]]}