{"coeffs": [-5.484363104609916e-07, -1.0625890452716396e-08, -0.253067105125014, 0.0004918839293327443], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.3640999066356e-08, 5.030638404848119e-08, 68479.6473604394, 151479.38085746663], "covariance": [[5.422996743491046e-15, 0.0, 2.6806927727122954e-12, 1.9436020400532578e-11], [-8.231474821378908e-33, 2.5307322760332827e-15, 4.016759480416584e-12, 9.718010200266289e-12], [0.0, 4.8590051001331445e-12, 4689462102.610134, -10373254583.497007], [3.8872040801065156e-11, 9.718010200266289e-12, -10373254583.497007, 22946002824.961426]]}