{"coeffs": [-1.1891402010435437e-07, 2.1852409673302142e-05, 0.8104165423543256, 0.06477472127408457], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [8.051888516074938e-08, 7.409382818121653e-06, 0.03937815707148293, 0.008360478138583394], "covariance": [[6.483290867529947e-15, -2.365834143064533e-13, -1.2702870485707655e-09, -3.5133445373788907e-10], [-2.3658341430645365e-13, 5.489895374547637e-11, 2.909926356356643e-07, 5.808221362642594e-08], [-1.2702870485707658e-09, 2.909926356356643e-07, 0.0015506392543463811, 0.00031386462270651777], [-3.5133445373788897e-10, 5.808221362642594e-08, 0.00031386462270651777, 6.989759470573085e-05]]}