Category: atom_site_occ_Fourier
Data type: numb
Must appear in a looped list
containing '_atom_site_occ_Fourier_id'
Must match a value of '_atom_site_Fourier_wave_vector_seq_id'
A numeric code identifying the wave vectors of the Fourier terms used in the structural model to describe the modulation functions corresponding to the occupational part of the distortion. This code must match _atom_site_Fourier_wave_vector_seq_id.