Ben Farr Fix z-order in mass-box figure  about 8 years ago

Commit id: be7d0e1e5a14a23016dc866562fb392dbcf57360

deletions | additions      

    Binary files a/figures/compmasses/mass_boxes.pdf and b/figures/compmasses/mass_boxes.pdf differ     Binary files a/figures/compmasses/mass_boxes.png and b/figures/compmasses/mass_boxes.png differ