Increasing precision in gmx distance

GROMACS version: 5.1.3
GROMACS modification: No
I want to measure certain bond lengths in a protein during simulation. I used gmx distance for this and obtained the values, which is given upto 3 decimal places. Is it possible to get the values upto 4 decimal places?

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Doesn’t look like gmx distance has option to set precision. Though it is beyond the scope of gromacs forum, but a workaround could be if you prefer, loading xtc/trr into VMD, and calculate distance with measure bond command.