So, now we know why you ask for point, because you have experimental data for the center point (which likely drops faster than the non center points on the ‘inside’ region.
I am jumping my response to answer this next… I do not think you will be satisfied using Results Control tools here. I suggest you start downloading the full sim rum results and examine them in ParaView where almost anything is possible.
You can add filters that perform calculations and integrate the output parameters in unimaginable ways on many extracted subsets (cells,/faces/points over many more types of slices, isovolunes, area of a slice etc) of the complete data set.
I think this could be done in ParaView.
But all these would be based on the time steps of your sim (I think you use ‘frames’)…
Why can’t you run a sim run with many times steps in 0.5s?