{"coeffs": [-1.8597696107191197e-07, -1.0927098439517605e-08, -0.15653449740614092, 0.023922597403716002], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [3.1878710105163605e-08, 2.6847133230770647e-08, 0.041913711093907055, 0.036008135033420645], "covariance": [[1.01625215796906e-15, -3.582779386986016e-17, 4.0165441767007214e-10, -3.274804417581248e-10], [-3.582779386986015e-17, 7.207685627107496e-16, 2.8317387238934996e-10, 2.382086704459145e-10], [4.0165441767007214e-10, 2.8317387238934996e-10, 0.0017567591776635075, -2.9189537167233916e-05], [-3.274804417581248e-10, 2.3820867044591453e-10, -2.9189537167233916e-05, 0.0012965857885850552]]}