deletions | additions       diff --git a/figures/massdensity/caption.tex b/figures/massdensity/caption.tex  index 1ef13f6..90bffe5 100644  --- a/figures/massdensity/caption.tex  +++ b/figures/massdensity/caption.tex 
...
The characteristic scale of the velocity line width $\sigma_0$ against the mass density $\Sigma M$, color coded by galactocentric distance $R_{gal}$. $R_\mathrm{gal}$.  \label{fig:sigmasigma}