on the chrony's (at least the master I have) the avg, hi, low, dtandard deviation, and extreme spread functions are accessed by a remote switch..

the switch is not that tough to make, just a momentary contact attached to the top 2 connections on a 1/8" stero jack..(about 10 bux)

I have not tried it yet, but will test some loads I'm working on after christmas..

I'll also wrap some tape 6" up on the supports to ge me a refrence of safe zone vs kill zone of the chrony with scoped rifles..