4

Pb      0.293480941771916      0.281165280161066      0.019152913546366
Pb      1.228238887760598      1.505513923520829      0.109511032190301
Pb      1.293343423551826      0.038802783223455      1.397403926391424
Pb      0.270069334446784      1.350006058218155      1.784755955437733