Now I get it. Thank you for explanation.
On Sat, Oct 14, 2023 at 9:39 PM Ihor Radchenko <yanta...@posteo.net> wrote: > Sławomir Grochowski <slawomir.grochow...@gmail.com> writes: > > > But I'm talking about: > > (":mean" . org-columns--summary-mean-time) > > not ("@mean" . org-columns--summary-mean-age). > > > > So this is the right function (":mean" . org-columns--summary-mean-time)? > > Or do I need to write a new one? > > I think you still need to write a new one. > > @mean works on (1) timestamps; (2) durations, while :mean works only on > durations. > > -- > Ihor Radchenko // yantar92, > Org mode contributor, > Learn more about Org mode at <https://orgmode.org/>. > Support Org development at <https://liberapay.com/org-mode>, > or support my work at <https://liberapay.com/yantar92> >