#  A     p-dens         n-dens        pp-dens       pn-dens         nn-density
   3   0.018842049    0.010704026   0.0022980709   0.0055786045    0.0
   4   0.029597217    0.029597217   0.0029591516   0.013238852     0.0029591516 
   9   0.015735257    0.017711848   0.0086097603   0.036092111     0.012673686