$cell vectors
1.0
  3.0199985789638522    0.0000000000000000    0.0000000000000000
  0.0000000000000000    3.0199985789638522    0.0000000000000000
  0.0000000000000000    0.0000000000000000    5.3099975014231937
 2 2
Direct
  0.4999999999999991    0.0000000000000000    0.0000000000000000 # Pd1
  0.0000000000000000    0.4999999999999991    0.5000000000000000 # Pd2
  0.0000000000000000    0.0000000000000000    0.2500000000000000 # O1
  0.0000000000000000    0.0000000000000000    0.7500000000000001 # O2