{"coeffs": [-6.676517738199671e-07, -4.677049712501604e-08, -0.20574325698650217, 0.04086513712435072], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [6.918351903550166e-08, 4.7299739657150864e-08, 0.029109432959591404, 0.025306070966998148], "covariance": [[4.7863593061356206e-15, -3.044722958244528e-16, 8.848261373094959e-10, -7.763789435543976e-10], [-3.0447229582445295e-16, 2.2372653716342502e-15, 3.817801533933985e-10, 3.8881966810905383e-10], [8.848261373094959e-10, 3.817801533933987e-10, 0.0008473590872289464, -7.646917915769617e-05], [-7.763789435543978e-10, 3.8881966810905383e-10, -7.646917915769621e-05, 0.0006403972277867465]]}