UFO launching radius versus AGN parameters. Significant and nonsignificant correlations for the S23, T10, and C21 samples. The best-fitting linear correlations, applied exclusively to statistically significant correlations, are presented by the solid black lines and the dark and light gray shadowed areas indicate the 68% and 90% confidence bands, respectively. In the legend, we report the best-fit coefficients, logNHP, and the intrinsic scatters for the correlations.