{"coeffs": [-2.151747018723602e-06, -1.2913174688977333e-07, -0.30480414177912357, 0.09188875663709953], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.793465758443966e-07, 6.363702241195331e-08, 0.08267247325766938, 0.03897154536765893], "covariance": [[6.073810852803858e-13, -1.883424843025775e-14, 6.312342654015901e-08, -2.7090408670627236e-08], [-1.8834248430257737e-14, 4.049670621459448e-15, -1.559074181583916e-09, 1.3346497744773441e-09], [6.312342654015902e-08, -1.5590741815839178e-09, 0.006834737834540058, -0.002808595361703897], [-2.7090408670627233e-08, 1.3346497744773443e-09, -0.002808595361703896, 0.001518781348343498]]}