{"coeffs": [-1.734105260373839e-08, 5.51445229056864e-07, 0.4470966770336021, 0.062173417468311364], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.9509558114643414e-08, 1.1882453541609817e-06, 0.2549447798982861, 0.07689695609961163], "covariance": [[1.5610051824143853e-15, -2.947611420847032e-14, -6.186393111990527e-09, -2.282438134997597e-09], [-2.947611420847029e-14, 1.4119270216851566e-12, 3.0222570231471906e-07, 8.706561471336715e-08], [-6.186393111990537e-09, 3.0222570231471906e-07, 0.06499684079738555, 0.01875040072164172], [-2.282438134997602e-09, 8.706561471336716e-08, 0.01875040072164172, 0.0059131418573855985]]}