{"coeffs": [-1.0385464304349912e-06, -5.582610278408031e-08, 0.04527735484905124, 0.045568706461505536], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.537985802221575e-08, 9.504980892035245e-08, 0.02421168743730201, 0.021048972461547587], "covariance": [[3.0669286745607746e-15, -6.069304579755572e-16, 3.4235228091474847e-10, -3.9522294950832743e-10], [-6.069304579755571e-16, 9.034466175795511e-15, 1.1703244289244878e-09, 1.0251377279682633e-09], [3.4235228091474857e-10, 1.170324428924488e-09, 0.0005862058085616079, 8.74812254184976e-05], [-3.952229495083275e-10, 1.0251377279682633e-09, 8.74812254184976e-05, 0.00044305924168698866]]}