{"coeffs": [-4.6980318745314643e-07, -7.152360587650494e-09, -0.24271598325833035, 0.12824929403672874], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [1.954650905199131e-07, 6.823211944103365e-08, 0.13214118876390565, 0.11218977108176797], "covariance": [[3.820660161195782e-14, -7.0328983600741204e-15, 2.2547021535645312e-08, -1.8912860393695438e-08], [-7.032898360074122e-15, 4.655622123415482e-15, -1.4897581865012918e-09, 5.665228959490953e-09], [2.254702153564531e-08, -1.4897581865012893e-09, 0.017461293767938146, -0.009532709891504263], [-1.891286039369544e-08, 5.665228959490952e-09, -0.009532709891504268, 0.012586544735379502]]}