{"coeffs": [-1.908419054445067e-06, 1.6872773255068537e-05, 0.32249006804454716, 0.15771812081305125], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.478050740485286e-07, 9.825559623027745e-07, 0.009534953537283423, 0.014085199230921984], "covariance": [[3.000903991533139e-13, -4.952684846238505e-13, -3.4792124648095108e-09, -7.534820167162652e-09], [-4.952684846238429e-13, 9.654162190567313e-13, 8.46658577358851e-09, 1.3545932208359136e-08], [-3.4792124648093727e-09, 8.466585773588369e-09, 9.091533895815368e-05, 0.00010796110513321227], [-7.534820167162594e-09, 1.3545932208359227e-08, 0.00010796110513321506, 0.00019839283737476524]]}