[Freesurfer] Thickness standard deviation map

Hi Freesurfers, I have tried looking this up on the list, but I don't understand exactly what to do in this scenario: I have a group of subjects (all controls). I want to create a surface map of the standard deviations of the thickness values (i.e. to show how the thicknesses vary across subje

[Freesurfer] Where can I find global and local thickness / volume measures for individual subjects?

Hi! I am new to Freesurfer; I have run reconstruction steps with recon-all. I can find no reference to thickness values calculated as part of this process, apart from visualising them in Freesurfer - is there a specific file from which I can extract this information without running the GUI?