{"coeffs": [-1.24611662452825e-05, -8.812751034050726e-07, -0.27293427063663256, 0.08203123930967436], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.1785887206590807e-06, 4.0308259806538897e-07, 0.05749931062514923, 0.03326685751092272], "covariance": [[1.0103426255101132e-11, -4.217548286377871e-13, 1.7420466755852013e-07, -9.116175225526663e-08], [-4.2175482863778736e-13, 1.624755808631439e-13, -4.397079632495794e-09, 6.621628215263454e-09], [1.742046675585201e-07, -4.397079632495791e-09, 0.003306170722367399, -0.0015385336670586162], [-9.116175225526663e-08, 6.621628215263452e-09, -0.0015385336670586162, 0.001106683808652035]]}