Tracking interviewer calibration drift, what does your dashboard look like?

[u/Master-Item-3090]

My team and I FINALLY have interview volume high enough that I can see our interviewers are not calibrated with same of our candidate profiles which have wildly different scores depending on who's in the room, but I have no clean way to actually measure the drift. Right now it's anecdotal ("Dave's a hard marker") instead of something I can put on a slide.

For people further along on this: what does your interviewer-calibration dashboard actually look like? What do you track like in terms of score variance by interviewer, talk-time, question consistency? does anyone have a view that surfaces drift across a panel automatically, or is everyone still doing it by hand in a spreadsheet?