Notes. Column (1): line names. Column (2): the BLR size ratios derived from our simultaneous fitting. We randomly selected 500 sets of model parameters from the posterior samples and calculated the median R_mean ratios and the 68% confidence intervals. Column (3): the time lag ratios measured by Bentz et al. (2010b). The Paβ time lag was not measured. Column (4): the time lag ratios derived by the RPC BLR model as described by Netzer (2020). We explored a range of model parameters in agreement with most RM measurements of various hydrogen and helium lines (e.g., Bentz et al. 2009, 2010b). The Hβ time lag was normalized to unity in all of the results.