Use the verified Si POSCAR, same licensed POTCAR and converged uniform KPOINTS. Run a final static SCF with LAECHG=.TRUE. Check convergence of the fine FFT grid. With separately installed author-provided Bader tools: chgsum.pl AECCAR0 AECCAR2; then bader CHGCAR -ref CHGCAR_sum. Interpret population using actual POTCAR ZVAL and report sign convention. No charge values are provided or claimed by this tutorial.