{"coeffs": [-3.141857474353753e-07, -1.746503522236785e-08, -0.32390160959959874, 0.023606860142658632], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.533887224041214e-08, 1.7197196568340683e-08, 0.019220596410090322, 0.016668823362657424], "covariance": [[1.2488358912241717e-15, -3.254640232434207e-17, 2.872063067754307e-10, -2.349950592581857e-10], [-3.254640232434207e-17, 2.9574356981014854e-16, 6.350522118050426e-11, 6.159320322566946e-11], [2.872063067754307e-10, 6.350522118050426e-11, 0.000369431326359577, -3.7529246969885344e-05], [-2.349950592581857e-10, 6.159320322566946e-11, -3.7529246969885344e-05, 0.000277849672295474]]}