Hi Jeff,

Did you only report that connectivity between a seed and some cluster(s) was different in one condition compared to another at some threshold of significance?  If so I would assume that the reviewer wants to see the beta values from the seed-to-voxel analyses.  In your second-level seed-to-voxel results window in CONN, there are two buttons on the lower right hand side:

"Display Values" will show you the effect sizes for your given contrast for each suprathreshold cluster.  See attached, in this image I have one seed that has four clusters with significant between-group differences.  The bar graph shows the between-group effect size (the fisher-transformed groupwise difference in connectivity) for each cluster and the table below gives the effect sizes/beta values as well as the T-statistic and p-values.  The line graph at the bottom shows the subject-specific effect for the selected cluster (here I have twelve subjects and you can see subjects 1, 2, 4, 11, and 12 who make up group A have lower values than the other subjects in group B.  The effect size of 0.39 in the table above is the difference in means of groups A and B).

"Import Values" will save the subject-specific effects as second-level covariates.  From there it's easy to copy and paste the values elsewhere if you want to plot them out in another another fashion like a box-whisker.

Hope this helps,
Jon