{"coeffs": [-6.337590256566492e-07, -2.0560724174155634e-08, -0.33854129593372034, 0.0484652780088634], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.3787330916869195e-07, 4.405678838636541e-08, 0.04243281827113924, 0.03504135516717674], "covariance": [[1.9009049381125714e-14, -9.554784208757971e-16, 4.185276517497074e-09, -3.2608319798682313e-09], [-9.554784208757977e-16, 1.9410006029209824e-15, 2.379209370501032e-10, 5.140759233143692e-10], [4.185276517497073e-09, 2.3792093705010337e-10, 0.001800544066431528, -0.0006361717066478984], [-3.2608319798682313e-09, 5.140759233143691e-10, -0.0006361717066478986, 0.0012278965719522239]]}