Gmx spatial

GROMACS version: 2023.1
GROMACS modification: No

Hello.

I have a system of cations, anions and CO2 molecules 200 each.
Is getting spatial distribution of one CO2 round one of the anion or cation and plotting the output in a fascinating figure possible?

How can I do that please?
I was unable to get that in the step 1-3 with “gmx trjconv” provided in the Gromacs documentation.

Thank You,