@rover83 Yeh so i have RTK obs on the surface which have a higher vertical accuracy which i will use for some checks.   But  Maybe I sho...

@dougie right, so you think its fine for me to leave my estimate uncertainty as i have currently calculated +/0.1m?

@a-harris Yes i agree but im trying to calculate an estimate of uncertainty within the total volume.

@dave-lindell something like 40m x 100m Dave.