{"coeffs": [-1.4935839409406463e-07, -2.3184040838402575e-08, -0.2958243804878797, 0.0009166599249633244], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [5.401255152075756e-08, 3.1585334359383475e-08, 4034543.4647922856, 1224436.038777157], "covariance": [[2.9173557217824893e-15, 9.291183367281196e-24, 0.06467870959064581, -0.019629220409478548], [1.0391622748812958e-23, 9.976333465940502e-16, 2.615235621919909e-09, -6.874747716700988e-10], [0.06467870962333626, 2.0921884975359273e-09, 16277540969298.14, -4940040418304.532], [-0.01962922041153133, -5.230471243839818e-10, -4940040418304.532, 1499243613056.2957]]}