{"coeffs": [-8.935974566502411e-07, -1.86254297944765e-09, -0.21062217999352176, 0.021334201555619284], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.1898091240765315e-08, 3.775447585236805e-08, 0.011509386691806397, 0.010372532040391331], "covariance": [[2.693411874434802e-15, -8.282996041838756e-17, 1.8367209767050672e-10, -1.5965515330773777e-10], [-8.282996041838756e-17, 1.4254004468870418e-15, 9.601086290160124e-11, 8.830541569122924e-11], [1.8367209767050675e-10, 9.601086290160124e-11, 0.0001324659820215302, -3.934746561587188e-06], [-1.5965515330773774e-10, 8.830541569122923e-11, -3.934746561587188e-06, 0.00010758942092894475]]}