How to compare the data with an experimental data

Hello,
i work on Medical_linac/Geant4.10.04
I have a problem if someone can help me, I want to compare the simulation results Geant4 with the experimental data, I have a problem to fix the size of the voxels in the phantom water(30,30,30)cm according to the experimental results.
the experimental results are calculated for the 44 point non-uniform measurement as follows:

REF_SCAN_POSITIONS = 0; 2; 4; 5; 6; 8; 10; 12; 14; 15; 19; 23; 27; 31; 35; 39; 44; 47, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150; 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300;
<
how can fix the number of voxel and size ?

I think like these cases using the file ML2ExpVoxel.cc but I do not know how to use it.