{"coeffs": [-2.758268999319514e-07, -1.3338256831174192e-08, -0.2961548298304763, 0.011503549756773465], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.657583646654175e-08, 1.5198371701277755e-08, 0.012069003367639998, 0.018508356668654056], "covariance": [[7.062750838963704e-16, -1.7490098003903564e-17, 1.0947354624045408e-10, -1.7100034254484015e-10], [-1.749009800390356e-17, 2.3099050237020047e-16, 1.5534261070493616e-11, 4.068972535841853e-11], [1.094735462404541e-10, 1.5534261070493616e-11, 0.00014566084228810562, -9.241839061686063e-05], [-1.7100034254484015e-10, 4.0689725358418536e-11, -9.241839061686063e-05, 0.000342559266574111]]}