{"coeffs": [-4.844118382036994e-07, -2.577051376649329e-08, -0.21073695015649774, 0.021121290250877126], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [4.813832808858589e-08, 3.503325723381055e-08, 0.020664127694539413, 0.01867393976587291], "covariance": [[2.3172986311643376e-15, -7.109900423939438e-17, 3.0380119047828214e-10, -2.655212284166684e-10], [-7.10990042393944e-17, 1.2273291124103388e-15, 1.5928926846533866e-10, 1.4715829629500488e-10], [3.038011904782822e-10, 1.592892684653387e-10, 0.0004270061733762307, -1.1903721127145937e-05], [-2.6552122841666844e-10, 1.4715829629500485e-10, -1.1903721127145937e-05, 0.0003487160263794497]]}