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[Katalin Gaal-Nagy <katalin.gaal-nagy@physik.uni-regensburg.de>]

Dear Gian-Marco,

you are right, I was overlooking it...

Best wishes,
Katalin



> Dear Katalin,
>
> for your information, the number of equivalent positions for the various 
> atoms is different. From the table, we can see that Pb, Bi, and Cl occupy 4c 
> sites (4 equivalent positions) while O is on a 8e Wyckoff site (8 equivalent 
> positions). Hence, despite the number of independent atoms is 4, the unit 
> cell contains 4+4+4+8=20 atoms (which is indeed a multiple of 5).
>
> Best regards,
>
> Gian-Marco.