[Wien] [wien2k] about surface simulations ( electric charge density plot)

[MoonfalL]

Dear WIEN users,

        I have some questions about surface simulations, one of them is :
        When i plot  the electric charge density, it display that some
atoms  existed  in the vacuum  regions, why?
       " the correlative files are appendixed: *.struct *.rho  *.klist "
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