{"coeffs": [-4.063004855869398e-07, -1.7778010051176353e-08, -0.27601968131503335, 0.039311366218988286], "function": "lambda x, A, B, C, D: (D + ((C - D) / (1 + numpy.exp((B - x) / A))))", "log_ftol": 1e-08, "errors": [2.2760826064488713e-08, 1.1805099983137259e-08, 0.012775049733056846, 0.011044791356887048], "covariance": [[5.180552031379088e-16, -2.6480778949591302e-17, 1.4896378608720838e-10, -1.2650513730542614e-10], [-2.648077894959131e-17, 1.393603856118673e-16, 3.4282915540032275e-11, 3.8950827287816006e-11], [1.4896378608720836e-10, 3.428291554003227e-11, 0.00016320189568207581, -2.65098265748599e-05], [-1.2650513730542614e-10, 3.895082728781601e-11, -2.65098265748599e-05, 0.00012198741611716684]]}