{"coeffs": [-8.541533788674946e-07, -2.1687372930339856e-08, -0.21262856505412234, 0.07742983499767252], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [7.160972271796838e-08, 3.8242385042910814e-08, 0.025664693649258285, 0.022906321292216644], "covariance": [[5.1279523877443165e-15, -7.146308570290002e-16, 1.2003347675933408e-09, -1.1293442718600926e-09], [-7.146308570290005e-16, 1.4624800137702487e-15, 2.1209870288803203e-10, 4.513937274262188e-10], [1.2003347675933404e-09, 2.120987028880321e-10, 0.0006586765001102786, -0.0001829467708075552], [-1.1293442718600926e-09, 4.513937274262188e-10, -0.00018294677080755523, 0.0005246995551422576]]}