{"coeffs": [-1.92045133069289e-08, 0.001668410978192982, 3.823497946675104, 0.2679452208987304], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.43083040524005e-08, 410.7956793906898, 66287.1781041301, 1.7346504753046101], "covariance": [[2.9493918890479806e-15, -2.028615505630617e-05, -0.0032735021407324038, -9.098763705296828e-08], [-2.0286155119178023e-05, 168753.09020605843, 27230486.329442285, 699.7761599069399], [-0.0032735021508419142, 27230486.329432108, 4393989981.008664, 112918.99946271302], [-9.098763719286526e-08, 699.776158912792, 112918.99930233661, 3.0090122714745102]]}