Figure 4.
The percent error of the posterior-mean estimates of 
when background rates were
constant (top row of panels) or variable (bottom row of panels). Each column of
panels corresponds to simulations for a given number of species,
. Within each panel, boxplots
depict the distribution of percent error across 100 simulated data sets for each of
the 
continuous characters (along the
x-axis), colored by the true state-dependent rates, 
(see inset
legend). Boxplots represent the middle 
(boxes) and
the middle 
(whiskers) of simulations.